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Finding the Fourth Proportional to 418,660.88, 627,822.20 and 162,358.49

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Solution

The fourth proportional to 418,660.88, 627,822.20 and 162,358.49 is: 243,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,660.88 : 627,822.20 = 162,358.49 : x
  2. Step 2: Convert to fraction form
    418,660.88/627,822.20 = 162,358.49/x
  3. Step 3: Cross multiply
    418,660.88x = 627,822.20 × 162,358.49
  4. Step 4: Simplify right side
    418,660.88x = 101,932,260,429.58
  5. Step 5: Solve for x
    x = 101,932,260,429.58/418,660.88
  6. Step 6: Final answer
    x = 243,472.14

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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.