Home / 278,600.16-417,960.24-86,470.59

Finding the Fourth Proportional to 278,600.16, 417,960.24 and 86,470.59

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Solution

The fourth proportional to 278,600.16, 417,960.24 and 86,470.59 is: 129,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,600.16 : 417,960.24 = 86,470.59 : x
  2. Step 2: Convert to fraction form
    278,600.16/417,960.24 = 86,470.59/x
  3. Step 3: Cross multiply
    278,600.16x = 417,960.24 × 86,470.59
  4. Step 4: Simplify right side
    278,600.16x = 36,141,268,549.34
  5. Step 5: Solve for x
    x = 36,141,268,549.34/278,600.16
  6. Step 6: Final answer
    x = 129,724.51

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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.