Home / 431,731.89-647,599.39-132,211.17

Finding the Fourth Proportional to 431,731.89, 647,599.39 and 132,211.17

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Solution

The fourth proportional to 431,731.89, 647,599.39 and 132,211.17 is: 198,317.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,731.89 : 647,599.39 = 132,211.17 : x
  2. Step 2: Convert to fraction form
    431,731.89/647,599.39 = 132,211.17/x
  3. Step 3: Cross multiply
    431,731.89x = 647,599.39 × 132,211.17
  4. Step 4: Simplify right side
    431,731.89x = 85,619,872,712.66
  5. Step 5: Solve for x
    x = 85,619,872,712.66/431,731.89
  6. Step 6: Final answer
    x = 198,317.23

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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.