Home / 247,478.20-371,217.30-89,711.80

Finding the Fourth Proportional to 247,478.20, 371,217.30 and 89,711.80

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Solution

The fourth proportional to 247,478.20, 371,217.30 and 89,711.80 is: 134,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,478.20 : 371,217.30 = 89,711.80 : x
  2. Step 2: Convert to fraction form
    247,478.20/371,217.30 = 89,711.80/x
  3. Step 3: Cross multiply
    247,478.20x = 371,217.30 × 89,711.80
  4. Step 4: Simplify right side
    247,478.20x = 33,302,572,174.14
  5. Step 5: Solve for x
    x = 33,302,572,174.14/247,478.20
  6. Step 6: Final answer
    x = 134,567.70

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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.