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Finding the Fourth Proportional to 321,067.65, 443,371.19 and 240,355.05

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Solution

The fourth proportional to 321,067.65, 443,371.19 and 240,355.05 is: 331,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,067.65 : 443,371.19 = 240,355.05 : x
  2. Step 2: Convert to fraction form
    321,067.65/443,371.19 = 240,355.05/x
  3. Step 3: Cross multiply
    321,067.65x = 443,371.19 × 240,355.05
  4. Step 4: Simplify right side
    321,067.65x = 106,566,503,339.23
  5. Step 5: Solve for x
    x = 106,566,503,339.23/321,067.65
  6. Step 6: Final answer
    x = 331,912.93

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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.