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Finding the Fourth Proportional to 521,131.70, 781,171.29 and 250,862.90

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Solution

The fourth proportional to 521,131.70, 781,171.29 and 250,862.90 is: 376,041.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,131.70 : 781,171.29 = 250,862.90 : x
  2. Step 2: Convert to fraction form
    521,131.70/781,171.29 = 250,862.90/x
  3. Step 3: Cross multiply
    521,131.70x = 781,171.29 × 250,862.90
  4. Step 4: Simplify right side
    521,131.70x = 195,966,895,206.14
  5. Step 5: Solve for x
    x = 195,966,895,206.14/521,131.70
  6. Step 6: Final answer
    x = 376,041.02

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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.