Home / 431,914.60-647,996.33-132,439.29

Finding the Fourth Proportional to 431,914.60, 647,996.33 and 132,439.29

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Solution

The fourth proportional to 431,914.60, 647,996.33 and 132,439.29 is: 198,697.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,914.60 : 647,996.33 = 132,439.29 : x
  2. Step 2: Convert to fraction form
    431,914.60/647,996.33 = 132,439.29/x
  3. Step 3: Cross multiply
    431,914.60x = 647,996.33 × 132,439.29
  4. Step 4: Simplify right side
    431,914.60x = 85,820,173,867.81
  5. Step 5: Solve for x
    x = 85,820,173,867.81/431,914.60
  6. Step 6: Final answer
    x = 198,697.09

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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.