Home / 278,177.90-417,318.71-126,385.61

Finding the Fourth Proportional to 278,177.90, 417,318.71 and 126,385.61

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Solution

The fourth proportional to 278,177.90, 417,318.71 and 126,385.61 is: 189,601.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,177.90 : 417,318.71 = 126,385.61 : x
  2. Step 2: Convert to fraction form
    278,177.90/417,318.71 = 126,385.61/x
  3. Step 3: Cross multiply
    278,177.90x = 417,318.71 × 126,385.61
  4. Step 4: Simplify right side
    278,177.90x = 52,743,077,009.24
  5. Step 5: Solve for x
    x = 52,743,077,009.24/278,177.90
  6. Step 6: Final answer
    x = 189,601.97

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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.