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Finding the Fourth Proportional to 423,869.88, 635,706.12 and 157,755.72

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Solution

The fourth proportional to 423,869.88, 635,706.12 and 157,755.72 is: 236,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,869.88 : 635,706.12 = 157,755.72 : x
  2. Step 2: Convert to fraction form
    423,869.88/635,706.12 = 157,755.72/x
  3. Step 3: Cross multiply
    423,869.88x = 635,706.12 × 157,755.72
  4. Step 4: Simplify right side
    423,869.88x = 100,286,276,669.01
  5. Step 5: Solve for x
    x = 100,286,276,669.01/423,869.88
  6. Step 6: Final answer
    x = 236,596.85

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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.