Home / 819,136.91-1,228,704.71-220,098.06

Finding the Fourth Proportional to 819,136.91, 1,228,704.71 and 220,098.06

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Solution

The fourth proportional to 819,136.91, 1,228,704.71 and 220,098.06 is: 330,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,136.91 : 1,228,704.71 = 220,098.06 : x
  2. Step 2: Convert to fraction form
    819,136.91/1,228,704.71 = 220,098.06/x
  3. Step 3: Cross multiply
    819,136.91x = 1,228,704.71 × 220,098.06
  4. Step 4: Simplify right side
    819,136.91x = 270,435,522,983.86
  5. Step 5: Solve for x
    x = 270,435,522,983.86/819,136.91
  6. Step 6: Final answer
    x = 330,146.92

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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.