Home / 720,139.62-1,080,195.51-215,042.85

Finding the Fourth Proportional to 720,139.62, 1,080,195.51 and 215,042.85

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Solution

The fourth proportional to 720,139.62, 1,080,195.51 and 215,042.85 is: 322,560.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,139.62 : 1,080,195.51 = 215,042.85 : x
  2. Step 2: Convert to fraction form
    720,139.62/1,080,195.51 = 215,042.85/x
  3. Step 3: Cross multiply
    720,139.62x = 1,080,195.51 × 215,042.85
  4. Step 4: Simplify right side
    720,139.62x = 232,288,321,027.60
  5. Step 5: Solve for x
    x = 232,288,321,027.60/720,139.62
  6. Step 6: Final answer
    x = 322,560.12

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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.