To apply the Pythagorean theorem, we need to know the sides of the right triangle. The Pythagorean theorem is stated as:
\( a^2 + b^2 = c^2 \)
where \( c \) is the length of the hypotenuse and \( a \) and \( b \) are the lengths of the other two sides.
Given the numbers you've provided (14.7, 216, 15.3, 234), I'm guessing one of these might be the hypotenuse while the other two are the legs of the triangle. However, without additional information or clarity on which numbers correspond to which sides, I can’t provide a specific solution.
If you could clarify which value represents the hypotenuse and which are the legs, I would be able to assist you in finding the unknown side length using the Pythagorean theorem.