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Finding the Fourth Proportional to 381,662.50, 572,756.19 and 132,344.50

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Solution

The fourth proportional to 381,662.50, 572,756.19 and 132,344.50 is: 198,607.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,662.50 : 572,756.19 = 132,344.50 : x
  2. Step 2: Convert to fraction form
    381,662.50/572,756.19 = 132,344.50/x
  3. Step 3: Cross multiply
    381,662.50x = 572,756.19 × 132,344.50
  4. Step 4: Simplify right side
    381,662.50x = 75,801,131,587.46
  5. Step 5: Solve for x
    x = 75,801,131,587.46/381,662.50
  6. Step 6: Final answer
    x = 198,607.75

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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.