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Finding the Fourth Proportional to 381,505.02, 572,257.80 and 132,187.02

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Solution

The fourth proportional to 381,505.02, 572,257.80 and 132,187.02 is: 198,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,505.02 : 572,257.80 = 132,187.02 : x
  2. Step 2: Convert to fraction form
    381,505.02/572,257.80 = 132,187.02/x
  3. Step 3: Cross multiply
    381,505.02x = 572,257.80 × 132,187.02
  4. Step 4: Simplify right side
    381,505.02x = 75,645,053,253.76
  5. Step 5: Solve for x
    x = 75,645,053,253.76/381,505.02
  6. Step 6: Final answer
    x = 198,280.62

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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.