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Finding the Fourth Proportional to 418,767.25, 627,844.64 and 134,295.88

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Solution

The fourth proportional to 418,767.25, 627,844.64 and 134,295.88 is: 201,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,767.25 : 627,844.64 = 134,295.88 : x
  2. Step 2: Convert to fraction form
    418,767.25/627,844.64 = 134,295.88/x
  3. Step 3: Cross multiply
    418,767.25x = 627,844.64 × 134,295.88
  4. Step 4: Simplify right side
    418,767.25x = 84,316,948,432.08
  5. Step 5: Solve for x
    x = 84,316,948,432.08/418,767.25
  6. Step 6: Final answer
    x = 201,345.61

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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.