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Finding the Fourth Proportional to 247,932.70, 372,287.85 and 142,956.70

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Solution

The fourth proportional to 247,932.70, 372,287.85 and 142,956.70 is: 214,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,932.70 : 372,287.85 = 142,956.70 : x
  2. Step 2: Convert to fraction form
    247,932.70/372,287.85 = 142,956.70/x
  3. Step 3: Cross multiply
    247,932.70x = 372,287.85 × 142,956.70
  4. Step 4: Simplify right side
    247,932.70x = 53,221,042,486.10
  5. Step 5: Solve for x
    x = 53,221,042,486.10/247,932.70
  6. Step 6: Final answer
    x = 214,659.23

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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.