Finding the Fourth Proportional to 378,512.87, 522,257.95 and 215,156.52
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Solution
The fourth proportional to 378,512.87, 522,257.95 and 215,156.52 is: 296,864.95
Step by Step Solution
- Step 1: Write the proportion equation
378,512.87 : 522,257.95 = 215,156.52 : x - Step 2: Convert to fraction form
378,512.87/522,257.95 = 215,156.52/x - Step 3: Cross multiply
378,512.87x = 522,257.95 × 215,156.52 - Step 4: Simplify right side
378,512.87x = 112,367,202,526.44 - Step 5: Solve for x
x = 112,367,202,526.44/378,512.87 - Step 6: Final answer
x = 296,864.95
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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.