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Finding the Fourth Proportional to 203,472.60, 305,204.10 and 55,728.60

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Solution

The fourth proportional to 203,472.60, 305,204.10 and 55,728.60 is: 83,591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,472.60 : 305,204.10 = 55,728.60 : x
  2. Step 2: Convert to fraction form
    203,472.60/305,204.10 = 55,728.60/x
  3. Step 3: Cross multiply
    203,472.60x = 305,204.10 × 55,728.60
  4. Step 4: Simplify right side
    203,472.60x = 17,008,597,207.26
  5. Step 5: Solve for x
    x = 17,008,597,207.26/203,472.60
  6. Step 6: Final answer
    x = 83,591.59

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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.