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Finding the Fourth Proportional to 392,930.52, 542,200.41 and 220,808.76

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Solution

The fourth proportional to 392,930.52, 542,200.41 and 220,808.76 is: 304,691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,930.52 : 542,200.41 = 220,808.76 : x
  2. Step 2: Convert to fraction form
    392,930.52/542,200.41 = 220,808.76/x
  3. Step 3: Cross multiply
    392,930.52x = 542,200.41 × 220,808.76
  4. Step 4: Simplify right side
    392,930.52x = 119,722,600,203.59
  5. Step 5: Solve for x
    x = 119,722,600,203.59/392,930.52
  6. Step 6: Final answer
    x = 304,691.53

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1.5x scale

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.