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Finding the Fourth Proportional to 392,036.60, 587,277.30 and 225,630.20

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Solution

The fourth proportional to 392,036.60, 587,277.30 and 225,630.20 is: 337,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,036.60 : 587,277.30 = 225,630.20 : x
  2. Step 2: Convert to fraction form
    392,036.60/587,277.30 = 225,630.20/x
  3. Step 3: Cross multiply
    392,036.60x = 587,277.30 × 225,630.20
  4. Step 4: Simplify right side
    392,036.60x = 132,507,494,654.46
  5. Step 5: Solve for x
    x = 132,507,494,654.46/392,036.60
  6. Step 6: Final answer
    x = 337,997.77

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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.