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Finding the Fourth Proportional to 391,387.95, 586,896.87 and 151,614.15

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Solution

The fourth proportional to 391,387.95, 586,896.87 and 151,614.15 is: 227,349.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,387.95 : 586,896.87 = 151,614.15 : x
  2. Step 2: Convert to fraction form
    391,387.95/586,896.87 = 151,614.15/x
  3. Step 3: Cross multiply
    391,387.95x = 586,896.87 × 151,614.15
  4. Step 4: Simplify right side
    391,387.95x = 88,981,872,123.10
  5. Step 5: Solve for x
    x = 88,981,872,123.10/391,387.95
  6. Step 6: Final answer
    x = 227,349.54

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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.