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Finding the Fourth Proportional to 418,079.52, 627,160.80 and 133,698.62

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Solution

The fourth proportional to 418,079.52, 627,160.80 and 133,698.62 is: 200,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,079.52 : 627,160.80 = 133,698.62 : x
  2. Step 2: Convert to fraction form
    418,079.52/627,160.80 = 133,698.62/x
  3. Step 3: Cross multiply
    418,079.52x = 627,160.80 × 133,698.62
  4. Step 4: Simplify right side
    418,079.52x = 83,850,533,478.10
  5. Step 5: Solve for x
    x = 83,850,533,478.10/418,079.52
  6. Step 6: Final answer
    x = 200,561.21

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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.