Home / 431,525.48-647,287.30-115,982.38

Finding the Fourth Proportional to 431,525.48, 647,287.30 and 115,982.38

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Solution

The fourth proportional to 431,525.48, 647,287.30 and 115,982.38 is: 173,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,525.48 : 647,287.30 = 115,982.38 : x
  2. Step 2: Convert to fraction form
    431,525.48/647,287.30 = 115,982.38/x
  3. Step 3: Cross multiply
    431,525.48x = 647,287.30 × 115,982.38
  4. Step 4: Simplify right side
    431,525.48x = 75,073,922,551.86
  5. Step 5: Solve for x
    x = 75,073,922,551.86/431,525.48
  6. Step 6: Final answer
    x = 173,973.33

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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.