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Finding the Fourth Proportional to 390,912.48, 586,543.68 and 224,700.48

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Solution

The fourth proportional to 390,912.48, 586,543.68 and 224,700.48 is: 337,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,912.48 : 586,543.68 = 224,700.48 : x
  2. Step 2: Convert to fraction form
    390,912.48/586,543.68 = 224,700.48/x
  3. Step 3: Cross multiply
    390,912.48x = 586,543.68 × 224,700.48
  4. Step 4: Simplify right side
    390,912.48x = 131,796,646,436.97
  5. Step 5: Solve for x
    x = 131,796,646,436.97/390,912.48
  6. Step 6: Final answer
    x = 337,151.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.