Home / 431,913.60-647,994.83-132,438.29

Finding the Fourth Proportional to 431,913.60, 647,994.83 and 132,438.29

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Solution

The fourth proportional to 431,913.60, 647,994.83 and 132,438.29 is: 198,695.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,913.60 : 647,994.83 = 132,438.29 : x
  2. Step 2: Convert to fraction form
    431,913.60/647,994.83 = 132,438.29/x
  3. Step 3: Cross multiply
    431,913.60x = 647,994.83 × 132,438.29
  4. Step 4: Simplify right side
    431,913.60x = 85,819,323,311.88
  5. Step 5: Solve for x
    x = 85,819,323,311.88/431,913.60
  6. Step 6: Final answer
    x = 198,695.58

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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.