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Finding the Fourth Proportional to 225,350, 310,891.92 and 129,805.52

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Solution

The fourth proportional to 225,350, 310,891.92 and 129,805.52 is: 179,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,350 : 310,891.92 = 129,805.52 : x
  2. Step 2: Convert to fraction form
    225,350/310,891.92 = 129,805.52/x
  3. Step 3: Cross multiply
    225,350x = 310,891.92 × 129,805.52
  4. Step 4: Simplify right side
    225,350x = 40,355,487,339.40
  5. Step 5: Solve for x
    x = 40,355,487,339.40/225,350
  6. Step 6: Final answer
    x = 179,079.15

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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.