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Finding the Fourth Proportional to 203,530.72, 305,471.76 and 141,244.96

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Solution

The fourth proportional to 203,530.72, 305,471.76 and 141,244.96 is: 211,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,530.72 : 305,471.76 = 141,244.96 : x
  2. Step 2: Convert to fraction form
    203,530.72/305,471.76 = 141,244.96/x
  3. Step 3: Cross multiply
    203,530.72x = 305,471.76 × 141,244.96
  4. Step 4: Simplify right side
    203,530.72x = 43,146,346,522.33
  5. Step 5: Solve for x
    x = 43,146,346,522.33/203,530.72
  6. Step 6: Final answer
    x = 211,989.36

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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.