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Finding the Fourth Proportional to 247,680.88, 371,472.96 and 79,156

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Solution

The fourth proportional to 247,680.88, 371,472.96 and 79,156 is: 118,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,680.88 : 371,472.96 = 79,156 : x
  2. Step 2: Convert to fraction form
    247,680.88/371,472.96 = 79,156/x
  3. Step 3: Cross multiply
    247,680.88x = 371,472.96 × 79,156
  4. Step 4: Simplify right side
    247,680.88x = 29,404,313,621.76
  5. Step 5: Solve for x
    x = 29,404,313,621.76/247,680.88
  6. Step 6: Final answer
    x = 118,718.54

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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.