Home / 247,340.28-371,037.66-78,821.40

Finding the Fourth Proportional to 247,340.28, 371,037.66 and 78,821.40

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Solution

The fourth proportional to 247,340.28, 371,037.66 and 78,821.40 is: 118,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,340.28 : 371,037.66 = 78,821.40 : x
  2. Step 2: Convert to fraction form
    247,340.28/371,037.66 = 78,821.40/x
  3. Step 3: Cross multiply
    247,340.28x = 371,037.66 × 78,821.40
  4. Step 4: Simplify right side
    247,340.28x = 29,245,707,813.92
  5. Step 5: Solve for x
    x = 29,245,707,813.92/247,340.28
  6. Step 6: Final answer
    x = 118,240.78

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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.