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Finding the Fourth Proportional to 220,873.60, 331,310.40 and 73,129.60

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Solution

The fourth proportional to 220,873.60, 331,310.40 and 73,129.60 is: 109,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,873.60 : 331,310.40 = 73,129.60 : x
  2. Step 2: Convert to fraction form
    220,873.60/331,310.40 = 73,129.60/x
  3. Step 3: Cross multiply
    220,873.60x = 331,310.40 × 73,129.60
  4. Step 4: Simplify right side
    220,873.60x = 24,228,597,027.84
  5. Step 5: Solve for x
    x = 24,228,597,027.84/220,873.60
  6. Step 6: Final answer
    x = 109,694.40

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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.