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Finding the Third Proportional to 203,128 and 440,156

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Solution

The third proportional to 203,128 and 440,156 is: 953,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,128 : 440,156 = 440,156 : x
  2. Step 2: Convert to fraction form
    203,128/440,156 = 440,156/x
  3. Step 3: Cross multiply
    203,128x = 440,156 × 440,156
  4. Step 4: Simplify right side
    203,128x = 193,737,304,336
  5. Step 5: Solve for x
    x = 193,737,304,336/203,128
  6. Step 6: Final answer
    x = 953,769.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.