Home / 220,206.80-330,310.20-79,947.20

Finding the Fourth Proportional to 220,206.80, 330,310.20 and 79,947.20

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Solution

The fourth proportional to 220,206.80, 330,310.20 and 79,947.20 is: 119,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,206.80 : 330,310.20 = 79,947.20 : x
  2. Step 2: Convert to fraction form
    220,206.80/330,310.20 = 79,947.20/x
  3. Step 3: Cross multiply
    220,206.80x = 330,310.20 × 79,947.20
  4. Step 4: Simplify right side
    220,206.80x = 26,407,375,621.44
  5. Step 5: Solve for x
    x = 26,407,375,621.44/220,206.80
  6. Step 6: Final answer
    x = 119,920.80

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1.5x scale

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.