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Finding the Fourth Proportional to 391,342.32, 587,180.56 and 166,808.44

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Solution

The fourth proportional to 391,342.32, 587,180.56 and 166,808.44 is: 250,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,342.32 : 587,180.56 = 166,808.44 : x
  2. Step 2: Convert to fraction form
    391,342.32/587,180.56 = 166,808.44/x
  3. Step 3: Cross multiply
    391,342.32x = 587,180.56 × 166,808.44
  4. Step 4: Simplify right side
    391,342.32x = 97,946,673,211.93
  5. Step 5: Solve for x
    x = 97,946,673,211.93/391,342.32
  6. Step 6: Final answer
    x = 250,283.88

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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.