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Finding the Fourth Proportional to 392,040.60, 587,283.30 and 225,634.20

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Solution

The fourth proportional to 392,040.60, 587,283.30 and 225,634.20 is: 338,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,040.60 : 587,283.30 = 225,634.20 : x
  2. Step 2: Convert to fraction form
    392,040.60/587,283.30 = 225,634.20/x
  3. Step 3: Cross multiply
    392,040.60x = 587,283.30 × 225,634.20
  4. Step 4: Simplify right side
    392,040.60x = 132,511,197,568.86
  5. Step 5: Solve for x
    x = 132,511,197,568.86/392,040.60
  6. Step 6: Final answer
    x = 338,003.76

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1.5x scale

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.