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Finding the Fourth Proportional to 247,930.44, 342,142.68 and 140,520.79

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Solution

The fourth proportional to 247,930.44, 342,142.68 and 140,520.79 is: 193,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,930.44 : 342,142.68 = 140,520.79 : x
  2. Step 2: Convert to fraction form
    247,930.44/342,142.68 = 140,520.79/x
  3. Step 3: Cross multiply
    247,930.44x = 342,142.68 × 140,520.79
  4. Step 4: Simplify right side
    247,930.44x = 48,078,159,686.32
  5. Step 5: Solve for x
    x = 48,078,159,686.32/247,930.44
  6. Step 6: Final answer
    x = 193,917.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.