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Finding the Fourth Proportional to 247,339.92, 371,010.96 and 105,148.56

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Solution

The fourth proportional to 247,339.92, 371,010.96 and 105,148.56 is: 157,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,339.92 : 371,010.96 = 105,148.56 : x
  2. Step 2: Convert to fraction form
    247,339.92/371,010.96 = 105,148.56/x
  3. Step 3: Cross multiply
    247,339.92x = 371,010.96 × 105,148.56
  4. Step 4: Simplify right side
    247,339.92x = 39,011,268,188.22
  5. Step 5: Solve for x
    x = 39,011,268,188.22/247,339.92
  6. Step 6: Final answer
    x = 157,723.30

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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.