Finding the Fourth Proportional to 498.25, 747.50 and 156.25

Step by Step Solution

1. Step 1: Write the proportion equation
   498.25 : 747.50 = 156.25 : x
2. Step 2: Convert to fraction form
   498.25/747.50 = 156.25/x
3. Step 3: Cross multiply
   498.25x = 747.50 × 156.25
4. Step 4: Simplify right side
   498.25x = 116,796.09
5. Step 5: Solve for x
   x = 116,796.09/498.25
6. Step 6: Final answer
   x = 234.41