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Finding the Fourth Proportional to 225,073.28, 310,589.61 and 123,078.92

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Solution

The fourth proportional to 225,073.28, 310,589.61 and 123,078.92 is: 169,842.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,073.28 : 310,589.61 = 123,078.92 : x
  2. Step 2: Convert to fraction form
    225,073.28/310,589.61 = 123,078.92/x
  3. Step 3: Cross multiply
    225,073.28x = 310,589.61 × 123,078.92
  4. Step 4: Simplify right side
    225,073.28x = 38,227,033,659.54
  5. Step 5: Solve for x
    x = 38,227,033,659.54/225,073.28
  6. Step 6: Final answer
    x = 169,842.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.