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Finding the Fourth Proportional to 247,934.70, 372,290.85 and 142,958.70

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Solution

The fourth proportional to 247,934.70, 372,290.85 and 142,958.70 is: 214,662.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,934.70 : 372,290.85 = 142,958.70 : x
  2. Step 2: Convert to fraction form
    247,934.70/372,290.85 = 142,958.70/x
  3. Step 3: Cross multiply
    247,934.70x = 372,290.85 × 142,958.70
  4. Step 4: Simplify right side
    247,934.70x = 53,222,215,937.90
  5. Step 5: Solve for x
    x = 53,222,215,937.90/247,934.70
  6. Step 6: Final answer
    x = 214,662.23

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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.