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Finding the Fourth Proportional to 423,302.71, 635,013.60 and 123,805.75

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Solution

The fourth proportional to 423,302.71, 635,013.60 and 123,805.75 is: 185,726.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,302.71 : 635,013.60 = 123,805.75 : x
  2. Step 2: Convert to fraction form
    423,302.71/635,013.60 = 123,805.75/x
  3. Step 3: Cross multiply
    423,302.71x = 635,013.60 × 123,805.75
  4. Step 4: Simplify right side
    423,302.71x = 78,618,335,008.20
  5. Step 5: Solve for x
    x = 78,618,335,008.20/423,302.71
  6. Step 6: Final answer
    x = 185,726.04

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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.