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Finding the Fourth Proportional to 220,546.40, 330,819.60 and 200,207.30

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Solution

The fourth proportional to 220,546.40, 330,819.60 and 200,207.30 is: 300,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,546.40 : 330,819.60 = 200,207.30 : x
  2. Step 2: Convert to fraction form
    220,546.40/330,819.60 = 200,207.30/x
  3. Step 3: Cross multiply
    220,546.40x = 330,819.60 × 200,207.30
  4. Step 4: Simplify right side
    220,546.40x = 66,232,498,903.08
  5. Step 5: Solve for x
    x = 66,232,498,903.08/220,546.40
  6. Step 6: Final answer
    x = 300,310.95

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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.