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Finding the Fourth Proportional to 410,612.73, 615,920.54 and 126,301.36

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Solution

The fourth proportional to 410,612.73, 615,920.54 and 126,301.36 is: 189,452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,612.73 : 615,920.54 = 126,301.36 : x
  2. Step 2: Convert to fraction form
    410,612.73/615,920.54 = 126,301.36/x
  3. Step 3: Cross multiply
    410,612.73x = 615,920.54 × 126,301.36
  4. Step 4: Simplify right side
    410,612.73x = 77,791,601,853.93
  5. Step 5: Solve for x
    x = 77,791,601,853.93/410,612.73
  6. Step 6: Final answer
    x = 189,452.48

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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.