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Finding the Fourth Proportional to 381,520.60, 572,280.90 and 132,227.80

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Solution

The fourth proportional to 381,520.60, 572,280.90 and 132,227.80 is: 198,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,520.60 : 572,280.90 = 132,227.80 : x
  2. Step 2: Convert to fraction form
    381,520.60/572,280.90 = 132,227.80/x
  3. Step 3: Cross multiply
    381,520.60x = 572,280.90 × 132,227.80
  4. Step 4: Simplify right side
    381,520.60x = 75,671,444,389.02
  5. Step 5: Solve for x
    x = 75,671,444,389.02/381,520.60
  6. Step 6: Final answer
    x = 198,341.70

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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.