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Finding the Fourth Proportional to 321,367.31, 482,292.96 and 219,922.51

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Solution

The fourth proportional to 321,367.31, 482,292.96 and 219,922.51 is: 330,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,367.31 : 482,292.96 = 219,922.51 : x
  2. Step 2: Convert to fraction form
    321,367.31/482,292.96 = 219,922.51/x
  3. Step 3: Cross multiply
    321,367.31x = 482,292.96 × 219,922.51
  4. Step 4: Simplify right side
    321,367.31x = 106,067,077,112.80
  5. Step 5: Solve for x
    x = 106,067,077,112.80/321,367.31
  6. Step 6: Final answer
    x = 330,049.36

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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.