Home / 391,272.10-587,034.12-178,116.28

Finding the Fourth Proportional to 391,272.10, 587,034.12 and 178,116.28

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Solution

The fourth proportional to 391,272.10, 587,034.12 and 178,116.28 is: 267,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,272.10 : 587,034.12 = 178,116.28 : x
  2. Step 2: Convert to fraction form
    391,272.10/587,034.12 = 178,116.28/x
  3. Step 3: Cross multiply
    391,272.10x = 587,034.12 × 178,116.28
  4. Step 4: Simplify right side
    391,272.10x = 104,560,333,687.47
  5. Step 5: Solve for x
    x = 104,560,333,687.47/391,272.10
  6. Step 6: Final answer
    x = 267,231.76

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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.