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Finding the Fourth Proportional to 261,787.20, 392,680.80 and 227,572.80

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Solution

The fourth proportional to 261,787.20, 392,680.80 and 227,572.80 is: 341,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,787.20 : 392,680.80 = 227,572.80 : x
  2. Step 2: Convert to fraction form
    261,787.20/392,680.80 = 227,572.80/x
  3. Step 3: Cross multiply
    261,787.20x = 392,680.80 × 227,572.80
  4. Step 4: Simplify right side
    261,787.20x = 89,363,469,162.24
  5. Step 5: Solve for x
    x = 89,363,469,162.24/261,787.20
  6. Step 6: Final answer
    x = 341,359.20

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Similar ratio
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1.5x scale

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.