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Finding the Fourth Proportional to 276,520.92, 415,002.90 and 126,831.78

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Solution

The fourth proportional to 276,520.92, 415,002.90 and 126,831.78 is: 190,349.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,520.92 : 415,002.90 = 126,831.78 : x
  2. Step 2: Convert to fraction form
    276,520.92/415,002.90 = 126,831.78/x
  3. Step 3: Cross multiply
    276,520.92x = 415,002.90 × 126,831.78
  4. Step 4: Simplify right side
    276,520.92x = 52,635,556,512.16
  5. Step 5: Solve for x
    x = 52,635,556,512.16/276,520.92
  6. Step 6: Final answer
    x = 190,349.27

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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.