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Finding the Fourth Proportional to 247,679.88, 371,471.46 and 79,155

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Solution

The fourth proportional to 247,679.88, 371,471.46 and 79,155 is: 118,717.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,679.88 : 371,471.46 = 79,155 : x
  2. Step 2: Convert to fraction form
    247,679.88/371,471.46 = 79,155/x
  3. Step 3: Cross multiply
    247,679.88x = 371,471.46 × 79,155
  4. Step 4: Simplify right side
    247,679.88x = 29,403,823,416.30
  5. Step 5: Solve for x
    x = 29,403,823,416.30/247,679.88
  6. Step 6: Final answer
    x = 118,717.04

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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.