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Finding the Fourth Proportional to 458,279.38, 687,255.04 and 158,679.55

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Solution

The fourth proportional to 458,279.38, 687,255.04 and 158,679.55 is: 237,962.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,279.38 : 687,255.04 = 158,679.55 : x
  2. Step 2: Convert to fraction form
    458,279.38/687,255.04 = 158,679.55/x
  3. Step 3: Cross multiply
    458,279.38x = 687,255.04 × 158,679.55
  4. Step 4: Simplify right side
    458,279.38x = 109,053,320,482.43
  5. Step 5: Solve for x
    x = 109,053,320,482.43/458,279.38
  6. Step 6: Final answer
    x = 237,962.53

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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.