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Finding the Fourth Proportional to 423,737.20, 635,605.80 and 157,564.72

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Solution

The fourth proportional to 423,737.20, 635,605.80 and 157,564.72 is: 236,347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,737.20 : 635,605.80 = 157,564.72 : x
  2. Step 2: Convert to fraction form
    423,737.20/635,605.80 = 157,564.72/x
  3. Step 3: Cross multiply
    423,737.20x = 635,605.80 × 157,564.72
  4. Step 4: Simplify right side
    423,737.20x = 100,149,046,729.35
  5. Step 5: Solve for x
    x = 100,149,046,729.35/423,737.20
  6. Step 6: Final answer
    x = 236,347.08

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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.