Home / 431,454.13-647,137.46-115,870.03

Finding the Fourth Proportional to 431,454.13, 647,137.46 and 115,870.03

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Solution

The fourth proportional to 431,454.13, 647,137.46 and 115,870.03 is: 173,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,454.13 : 647,137.46 = 115,870.03 : x
  2. Step 2: Convert to fraction form
    431,454.13/647,137.46 = 115,870.03/x
  3. Step 3: Cross multiply
    431,454.13x = 647,137.46 × 115,870.03
  4. Step 4: Simplify right side
    431,454.13x = 74,983,836,324.97
  5. Step 5: Solve for x
    x = 74,983,836,324.97/431,454.13
  6. Step 6: Final answer
    x = 173,793.30

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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.