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Finding the Fourth Proportional to 392,027.30, 587,985.59 and 125,753.21

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Solution

The fourth proportional to 392,027.30, 587,985.59 and 125,753.21 is: 188,612.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,027.30 : 587,985.59 = 125,753.21 : x
  2. Step 2: Convert to fraction form
    392,027.30/587,985.59 = 125,753.21/x
  3. Step 3: Cross multiply
    392,027.30x = 587,985.59 × 125,753.21
  4. Step 4: Simplify right side
    392,027.30x = 73,941,072,750.70
  5. Step 5: Solve for x
    x = 73,941,072,750.70/392,027.30
  6. Step 6: Final answer
    x = 188,612.05

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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.