Home / 311,132.40-465,532.20-283,138.80

Finding the Fourth Proportional to 311,132.40, 465,532.20 and 283,138.80

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Solution

The fourth proportional to 311,132.40, 465,532.20 and 283,138.80 is: 423,646.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,132.40 : 465,532.20 = 283,138.80 : x
  2. Step 2: Convert to fraction form
    311,132.40/465,532.20 = 283,138.80/x
  3. Step 3: Cross multiply
    311,132.40x = 465,532.20 × 283,138.80
  4. Step 4: Simplify right side
    311,132.40x = 131,810,228,469.36
  5. Step 5: Solve for x
    x = 131,810,228,469.36/311,132.40
  6. Step 6: Final answer
    x = 423,646.74

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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.