Home / 801,280.80-1,201,921.20-240,315.30

Finding the Fourth Proportional to 801,280.80, 1,201,921.20 and 240,315.30

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Solution

The fourth proportional to 801,280.80, 1,201,921.20 and 240,315.30 is: 360,472.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,280.80 : 1,201,921.20 = 240,315.30 : x
  2. Step 2: Convert to fraction form
    801,280.80/1,201,921.20 = 240,315.30/x
  3. Step 3: Cross multiply
    801,280.80x = 1,201,921.20 × 240,315.30
  4. Step 4: Simplify right side
    801,280.80x = 288,840,053,754.36
  5. Step 5: Solve for x
    x = 288,840,053,754.36/801,280.80
  6. Step 6: Final answer
    x = 360,472.95

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Double scale
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Similar ratio
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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.