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Finding the Fourth Proportional to 418,264.43, 627,398.73 and 102,721.37

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Solution

The fourth proportional to 418,264.43, 627,398.73 and 102,721.37 is: 154,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,264.43 : 627,398.73 = 102,721.37 : x
  2. Step 2: Convert to fraction form
    418,264.43/627,398.73 = 102,721.37/x
  3. Step 3: Cross multiply
    418,264.43x = 627,398.73 × 102,721.37
  4. Step 4: Simplify right side
    418,264.43x = 64,447,253,944.87
  5. Step 5: Solve for x
    x = 64,447,253,944.87/418,264.43
  6. Step 6: Final answer
    x = 154,082.56

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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.