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Finding the Fourth Proportional to 321,677.25, 482,515.88 and 220,375.41

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Solution

The fourth proportional to 321,677.25, 482,515.88 and 220,375.41 is: 330,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,677.25 : 482,515.88 = 220,375.41 : x
  2. Step 2: Convert to fraction form
    321,677.25/482,515.88 = 220,375.41/x
  3. Step 3: Cross multiply
    321,677.25x = 482,515.88 × 220,375.41
  4. Step 4: Simplify right side
    321,677.25x = 106,334,633,784.63
  5. Step 5: Solve for x
    x = 106,334,633,784.63/321,677.25
  6. Step 6: Final answer
    x = 330,563.12

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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.