Home / 391,276.10-587,040.12-178,120.28

Finding the Fourth Proportional to 391,276.10, 587,040.12 and 178,120.28

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Solution

The fourth proportional to 391,276.10, 587,040.12 and 178,120.28 is: 267,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,276.10 : 587,040.12 = 178,120.28 : x
  2. Step 2: Convert to fraction form
    391,276.10/587,040.12 = 178,120.28/x
  3. Step 3: Cross multiply
    391,276.10x = 587,040.12 × 178,120.28
  4. Step 4: Simplify right side
    391,276.10x = 104,563,750,545.63
  5. Step 5: Solve for x
    x = 104,563,750,545.63/391,276.10
  6. Step 6: Final answer
    x = 267,237.77

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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.