Suresh and Manoj are friends. They go walking every morning in a triangular park which is near to their homes. The two parks are similar to each other. If the perimeter of the triangular park \(ABC\) where Suresh goes everyday is 319 \(m\) and the perimeter of the park \(PQR\) where Manoj goes is 957 \(m\). If the length \(PQ\) of \(\triangle PQR\) is 49 \(m\), then find the side \(AB\) of \(\triangle ABC\).
The length of the side \(AB\) is \(m\).
[Note: Enter your answer up to two decimal places if necessary.]