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Finding the Fourth Proportional to 381,753.42, 572,630.13 and 145,040.10

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Solution

The fourth proportional to 381,753.42, 572,630.13 and 145,040.10 is: 217,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,753.42 : 572,630.13 = 145,040.10 : x
  2. Step 2: Convert to fraction form
    381,753.42/572,630.13 = 145,040.10/x
  3. Step 3: Cross multiply
    381,753.42x = 572,630.13 × 145,040.10
  4. Step 4: Simplify right side
    381,753.42x = 83,054,331,318.21
  5. Step 5: Solve for x
    x = 83,054,331,318.21/381,753.42
  6. Step 6: Final answer
    x = 217,560.15

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Similar ratio
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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.