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Finding the Fourth Proportional to 247,911.56, 371,893.78 and 79,371.62

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Solution

The fourth proportional to 247,911.56, 371,893.78 and 79,371.62 is: 119,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,911.56 : 371,893.78 = 79,371.62 : x
  2. Step 2: Convert to fraction form
    247,911.56/371,893.78 = 79,371.62/x
  3. Step 3: Cross multiply
    247,911.56x = 371,893.78 × 79,371.62
  4. Step 4: Simplify right side
    247,911.56x = 29,517,811,786.52
  5. Step 5: Solve for x
    x = 29,517,811,786.52/247,911.56
  6. Step 6: Final answer
    x = 119,065.90

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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.