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Finding the Fourth Proportional to 423,760.35, 635,640.51 and 157,587.87

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Solution

The fourth proportional to 423,760.35, 635,640.51 and 157,587.87 is: 236,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,760.35 : 635,640.51 = 157,587.87 : x
  2. Step 2: Convert to fraction form
    423,760.35/635,640.51 = 157,587.87/x
  3. Step 3: Cross multiply
    423,760.35x = 635,640.51 × 157,587.87
  4. Step 4: Simplify right side
    423,760.35x = 100,169,234,056.61
  5. Step 5: Solve for x
    x = 100,169,234,056.61/423,760.35
  6. Step 6: Final answer
    x = 236,381.80

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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.