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Finding the Fourth Proportional to 381,101.76, 571,569.21 and 156,240.90

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Solution

The fourth proportional to 381,101.76, 571,569.21 and 156,240.90 is: 234,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,101.76 : 571,569.21 = 156,240.90 : x
  2. Step 2: Convert to fraction form
    381,101.76/571,569.21 = 156,240.90/x
  3. Step 3: Cross multiply
    381,101.76x = 571,569.21 × 156,240.90
  4. Step 4: Simplify right side
    381,101.76x = 89,302,487,782.69
  5. Step 5: Solve for x
    x = 89,302,487,782.69/381,101.76
  6. Step 6: Final answer
    x = 234,327.15

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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.