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Finding the Fourth Proportional to 247,806.75, 341,980.31 and 140,376.75

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Solution

The fourth proportional to 247,806.75, 341,980.31 and 140,376.75 is: 193,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,806.75 : 341,980.31 = 140,376.75 : x
  2. Step 2: Convert to fraction form
    247,806.75/341,980.31 = 140,376.75/x
  3. Step 3: Cross multiply
    247,806.75x = 341,980.31 × 140,376.75
  4. Step 4: Simplify right side
    247,806.75x = 48,006,084,481.79
  5. Step 5: Solve for x
    x = 48,006,084,481.79/247,806.75
  6. Step 6: Final answer
    x = 193,723.88

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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.