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Finding the Fourth Proportional to 391,391.95, 586,902.86 and 151,618.15

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Solution

The fourth proportional to 391,391.95, 586,902.86 and 151,618.15 is: 227,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,391.95 : 586,902.86 = 151,618.15 : x
  2. Step 2: Convert to fraction form
    391,391.95/586,902.86 = 151,618.15/x
  3. Step 3: Cross multiply
    391,391.95x = 586,902.86 × 151,618.15
  4. Step 4: Simplify right side
    391,391.95x = 88,985,125,862.91
  5. Step 5: Solve for x
    x = 88,985,125,862.91/391,391.95
  6. Step 6: Final answer
    x = 227,355.53

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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.