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Finding the Fourth Proportional to 321,675.75, 482,513.63 and 220,373.91

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Solution

The fourth proportional to 321,675.75, 482,513.63 and 220,373.91 is: 330,560.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,675.75 : 482,513.63 = 220,373.91 : x
  2. Step 2: Convert to fraction form
    321,675.75/482,513.63 = 220,373.91/x
  3. Step 3: Cross multiply
    321,675.75x = 482,513.63 × 220,373.91
  4. Step 4: Simplify right side
    321,675.75x = 106,333,414,169.52
  5. Step 5: Solve for x
    x = 106,333,414,169.52/321,675.75
  6. Step 6: Final answer
    x = 330,560.87

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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.