Home / 431,388.06-647,083.69-131,867.48

Finding the Fourth Proportional to 431,388.06, 647,083.69 and 131,867.48

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Solution

The fourth proportional to 431,388.06, 647,083.69 and 131,867.48 is: 197,801.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,388.06 : 647,083.69 = 131,867.48 : x
  2. Step 2: Convert to fraction form
    431,388.06/647,083.69 = 131,867.48/x
  3. Step 3: Cross multiply
    431,388.06x = 647,083.69 × 131,867.48
  4. Step 4: Simplify right side
    431,388.06x = 85,329,295,549.40
  5. Step 5: Solve for x
    x = 85,329,295,549.40/431,388.06
  6. Step 6: Final answer
    x = 197,801.71

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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.