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Finding the Fourth Proportional to 625,420.80, 938,131.20 and 251,251.20

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Solution

The fourth proportional to 625,420.80, 938,131.20 and 251,251.20 is: 376,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,420.80 : 938,131.20 = 251,251.20 : x
  2. Step 2: Convert to fraction form
    625,420.80/938,131.20 = 251,251.20/x
  3. Step 3: Cross multiply
    625,420.80x = 938,131.20 × 251,251.20
  4. Step 4: Simplify right side
    625,420.80x = 235,706,589,757.44
  5. Step 5: Solve for x
    x = 235,706,589,757.44/625,420.80
  6. Step 6: Final answer
    x = 376,876.80

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1.5x scale

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.