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Finding the Fourth Proportional to 663,372, 995,213.52 and 220,140

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Solution

The fourth proportional to 663,372, 995,213.52 and 220,140 is: 330,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,372 : 995,213.52 = 220,140 : x
  2. Step 2: Convert to fraction form
    663,372/995,213.52 = 220,140/x
  3. Step 3: Cross multiply
    663,372x = 995,213.52 × 220,140
  4. Step 4: Simplify right side
    663,372x = 219,086,304,292.80
  5. Step 5: Solve for x
    x = 219,086,304,292.80/663,372
  6. Step 6: Final answer
    x = 330,261.61

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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.