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Finding the Fourth Proportional to 425,418.10, 638,127.15 and 236,461.30

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Solution

The fourth proportional to 425,418.10, 638,127.15 and 236,461.30 is: 354,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,418.10 : 638,127.15 = 236,461.30 : x
  2. Step 2: Convert to fraction form
    425,418.10/638,127.15 = 236,461.30/x
  3. Step 3: Cross multiply
    425,418.10x = 638,127.15 × 236,461.30
  4. Step 4: Simplify right side
    425,418.10x = 150,892,375,454.30
  5. Step 5: Solve for x
    x = 150,892,375,454.30/425,418.10
  6. Step 6: Final answer
    x = 354,691.95

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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.