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Finding the Fourth Proportional to 392,691.95, 541,882.95 and 220,600.57

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Solution

The fourth proportional to 392,691.95, 541,882.95 and 220,600.57 is: 304,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,691.95 : 541,882.95 = 220,600.57 : x
  2. Step 2: Convert to fraction form
    392,691.95/541,882.95 = 220,600.57/x
  3. Step 3: Cross multiply
    392,691.95x = 541,882.95 × 220,600.57
  4. Step 4: Simplify right side
    392,691.95x = 119,539,687,643.28
  5. Step 5: Solve for x
    x = 119,539,687,643.28/392,691.95
  6. Step 6: Final answer
    x = 304,410.84

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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.