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Finding the Fourth Proportional to 321,805.52, 482,787.85 and 227,221.01

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Solution

The fourth proportional to 321,805.52, 482,787.85 and 227,221.01 is: 340,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,805.52 : 482,787.85 = 227,221.01 : x
  2. Step 2: Convert to fraction form
    321,805.52/482,787.85 = 227,221.01/x
  3. Step 3: Cross multiply
    321,805.52x = 482,787.85 × 227,221.01
  4. Step 4: Simplify right side
    321,805.52x = 109,699,545,232.43
  5. Step 5: Solve for x
    x = 109,699,545,232.43/321,805.52
  6. Step 6: Final answer
    x = 340,887.71

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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.