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Finding the Fourth Proportional to 542,245.88, 747,987.66 and 338,198.78

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Solution

The fourth proportional to 542,245.88, 747,987.66 and 338,198.78 is: 466,519.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,245.88 : 747,987.66 = 338,198.78 : x
  2. Step 2: Convert to fraction form
    542,245.88/747,987.66 = 338,198.78/x
  3. Step 3: Cross multiply
    542,245.88x = 747,987.66 × 338,198.78
  4. Step 4: Simplify right side
    542,245.88x = 252,968,514,067.06
  5. Step 5: Solve for x
    x = 252,968,514,067.06/542,245.88
  6. Step 6: Final answer
    x = 466,519.94

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1.5x scale

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.