Finding the Fourth Proportional to 285,313.92, 393,733.19 and 157,989.53
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Solution
The fourth proportional to 285,313.92, 393,733.19 and 157,989.53 is: 218,025.53
Step by Step Solution
- Step 1: Write the proportion equation
285,313.92 : 393,733.19 = 157,989.53 : x - Step 2: Convert to fraction form
285,313.92/393,733.19 = 157,989.53/x - Step 3: Cross multiply
285,313.92x = 393,733.19 × 157,989.53 - Step 4: Simplify right side
285,313.92x = 62,205,718,874.89 - Step 5: Solve for x
x = 62,205,718,874.89/285,313.92 - Step 6: Final answer
x = 218,025.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.