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Finding the Fourth Proportional to 418,398.28, 627,582.84 and 134,084.64

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Solution

The fourth proportional to 418,398.28, 627,582.84 and 134,084.64 is: 201,122.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,398.28 : 627,582.84 = 134,084.64 : x
  2. Step 2: Convert to fraction form
    418,398.28/627,582.84 = 134,084.64/x
  3. Step 3: Cross multiply
    418,398.28x = 627,582.84 × 134,084.64
  4. Step 4: Simplify right side
    418,398.28x = 84,149,219,171.58
  5. Step 5: Solve for x
    x = 84,149,219,171.58/418,398.28
  6. Step 6: Final answer
    x = 201,122.29

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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.