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Finding the Fourth Proportional to 423,173.52, 635,067 and 156,971.88

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Solution

The fourth proportional to 423,173.52, 635,067 and 156,971.88 is: 235,571.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,173.52 : 635,067 = 156,971.88 : x
  2. Step 2: Convert to fraction form
    423,173.52/635,067 = 156,971.88/x
  3. Step 3: Cross multiply
    423,173.52x = 635,067 × 156,971.88
  4. Step 4: Simplify right side
    423,173.52x = 99,687,660,915.96
  5. Step 5: Solve for x
    x = 99,687,660,915.96/423,173.52
  6. Step 6: Final answer
    x = 235,571.59

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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.