Home / 311,987,584.80-467,981,377.20-221,288,320.80

Finding the Fourth Proportional to 311,987,584.80, 467,981,377.20 and 221,288,320.80

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Solution

The fourth proportional to 311,987,584.80, 467,981,377.20 and 221,288,320.80 is: 331,932,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,987,584.80 : 467,981,377.20 = 221,288,320.80 : x
  2. Step 2: Convert to fraction form
    311,987,584.80/467,981,377.20 = 221,288,320.80/x
  3. Step 3: Cross multiply
    311,987,584.80x = 467,981,377.20 × 221,288,320.80
  4. Step 4: Simplify right side
    311,987,584.80x = 103,558,813,126,259,408
  5. Step 5: Solve for x
    x = 103,558,813,126,259,408/311,987,584.80
  6. Step 6: Final answer
    x = 331,932,481.20

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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.