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Finding the Fourth Proportional to 220,890.80, 331,595.40 and 219,335.60

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Solution

The fourth proportional to 220,890.80, 331,595.40 and 219,335.60 is: 329,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,890.80 : 331,595.40 = 219,335.60 : x
  2. Step 2: Convert to fraction form
    220,890.80/331,595.40 = 219,335.60/x
  3. Step 3: Cross multiply
    220,890.80x = 331,595.40 × 219,335.60
  4. Step 4: Simplify right side
    220,890.80x = 72,730,676,016.24
  5. Step 5: Solve for x
    x = 72,730,676,016.24/220,890.80
  6. Step 6: Final answer
    x = 329,260.78

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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.