Home / 418,618.32-627,949.20-138,157.44

Finding the Fourth Proportional to 418,618.32, 627,949.20 and 138,157.44

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Solution

The fourth proportional to 418,618.32, 627,949.20 and 138,157.44 is: 207,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,618.32 : 627,949.20 = 138,157.44 : x
  2. Step 2: Convert to fraction form
    418,618.32/627,949.20 = 138,157.44/x
  3. Step 3: Cross multiply
    418,618.32x = 627,949.20 × 138,157.44
  4. Step 4: Simplify right side
    418,618.32x = 86,755,853,922.05
  5. Step 5: Solve for x
    x = 86,755,853,922.05/418,618.32
  6. Step 6: Final answer
    x = 207,243.33

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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.