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Finding the Fourth Proportional to 381,707.70, 572,561.55 and 132,389.70

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Solution

The fourth proportional to 381,707.70, 572,561.55 and 132,389.70 is: 198,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,707.70 : 572,561.55 = 132,389.70 : x
  2. Step 2: Convert to fraction form
    381,707.70/572,561.55 = 132,389.70/x
  3. Step 3: Cross multiply
    381,707.70x = 572,561.55 × 132,389.70
  4. Step 4: Simplify right side
    381,707.70x = 75,801,251,836.04
  5. Step 5: Solve for x
    x = 75,801,251,836.04/381,707.70
  6. Step 6: Final answer
    x = 198,584.55

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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.