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Finding the Fourth Proportional to 423,679.32, 635,606.52 and 124,169.70

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Solution

The fourth proportional to 423,679.32, 635,606.52 and 124,169.70 is: 186,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,679.32 : 635,606.52 = 124,169.70 : x
  2. Step 2: Convert to fraction form
    423,679.32/635,606.52 = 124,169.70/x
  3. Step 3: Cross multiply
    423,679.32x = 635,606.52 × 124,169.70
  4. Step 4: Simplify right side
    423,679.32x = 78,923,070,906.44
  5. Step 5: Solve for x
    x = 78,923,070,906.44/423,679.32
  6. Step 6: Final answer
    x = 186,280.21

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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.