Home / 498,486.47-687,907.82-272,131.97

Finding the Fourth Proportional to 498,486.47, 687,907.82 and 272,131.97

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Solution

The fourth proportional to 498,486.47, 687,907.82 and 272,131.97 is: 375,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,486.47 : 687,907.82 = 272,131.97 : x
  2. Step 2: Convert to fraction form
    498,486.47/687,907.82 = 272,131.97/x
  3. Step 3: Cross multiply
    498,486.47x = 687,907.82 × 272,131.97
  4. Step 4: Simplify right side
    498,486.47x = 187,201,707,475.80
  5. Step 5: Solve for x
    x = 187,201,707,475.80/498,486.47
  6. Step 6: Final answer
    x = 375,540.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.