Home / 455,789.28-683,761.68-140,239.20

Finding the Fourth Proportional to 455,789.28, 683,761.68 and 140,239.20

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Solution

The fourth proportional to 455,789.28, 683,761.68 and 140,239.20 is: 210,382.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,789.28 : 683,761.68 = 140,239.20 : x
  2. Step 2: Convert to fraction form
    455,789.28/683,761.68 = 140,239.20/x
  3. Step 3: Cross multiply
    455,789.28x = 683,761.68 × 140,239.20
  4. Step 4: Simplify right side
    455,789.28x = 95,890,190,993.86
  5. Step 5: Solve for x
    x = 95,890,190,993.86/455,789.28
  6. Step 6: Final answer
    x = 210,382.73

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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.