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Finding the Fourth Proportional to 418,327.68, 627,569.28 and 169,184.64

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Solution

The fourth proportional to 418,327.68, 627,569.28 and 169,184.64 is: 253,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,327.68 : 627,569.28 = 169,184.64 : x
  2. Step 2: Convert to fraction form
    418,327.68/627,569.28 = 169,184.64/x
  3. Step 3: Cross multiply
    418,327.68x = 627,569.28 × 169,184.64
  4. Step 4: Simplify right side
    418,327.68x = 106,175,082,711.86
  5. Step 5: Solve for x
    x = 106,175,082,711.86/418,327.68
  6. Step 6: Final answer
    x = 253,808.41

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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.