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Finding the Fourth Proportional to 327,891.04, 449,540.32 and 321,913.28

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Solution

The fourth proportional to 327,891.04, 449,540.32 and 321,913.28 is: 441,344.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,891.04 : 449,540.32 = 321,913.28 : x
  2. Step 2: Convert to fraction form
    327,891.04/449,540.32 = 321,913.28/x
  3. Step 3: Cross multiply
    327,891.04x = 449,540.32 × 321,913.28
  4. Step 4: Simplify right side
    327,891.04x = 144,712,998,903.45
  5. Step 5: Solve for x
    x = 144,712,998,903.45/327,891.04
  6. Step 6: Final answer
    x = 441,344.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.