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Finding the Fourth Proportional to 321,067.72, 443,371.29 and 240,355.12

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Solution

The fourth proportional to 321,067.72, 443,371.29 and 240,355.12 is: 331,913.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,067.72 : 443,371.29 = 240,355.12 : x
  2. Step 2: Convert to fraction form
    321,067.72/443,371.29 = 240,355.12/x
  3. Step 3: Cross multiply
    321,067.72x = 443,371.29 × 240,355.12
  4. Step 4: Simplify right side
    321,067.72x = 106,566,557,382.34
  5. Step 5: Solve for x
    x = 106,566,557,382.34/321,067.72
  6. Step 6: Final answer
    x = 331,913.02

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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.