The expression \( 5\sqrt{3} \) can be rewritten using rational exponents.
The nth root of a number can be expressed as that number raised to the power of \( \frac{1}{n} \). In this case, the fifth root is denoted as \( \frac{1}{5} \).
Therefore, \( 5\sqrt{3} \) can be expressed as:
\[ 3^{\frac{1}{5}} \]
So the rational exponent in the equivalent expression is:
\[ \frac{1}{5} \]