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Finding the Fourth Proportional to 663,966.80, 995,820.60 and 220,734.80

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Solution

The fourth proportional to 663,966.80, 995,820.60 and 220,734.80 is: 331,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,966.80 : 995,820.60 = 220,734.80 : x
  2. Step 2: Convert to fraction form
    663,966.80/995,820.60 = 220,734.80/x
  3. Step 3: Cross multiply
    663,966.80x = 995,820.60 × 220,734.80
  4. Step 4: Simplify right side
    663,966.80x = 219,812,260,976.88
  5. Step 5: Solve for x
    x = 219,812,260,976.88/663,966.80
  6. Step 6: Final answer
    x = 331,059.11

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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.