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Finding the Third Proportional to 128,435 and 277,231.50

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Solution

The third proportional to 128,435 and 277,231.50 is: 598,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,435 : 277,231.50 = 277,231.50 : x
  2. Step 2: Convert to fraction form
    128,435/277,231.50 = 277,231.50/x
  3. Step 3: Cross multiply
    128,435x = 277,231.50 × 277,231.50
  4. Step 4: Simplify right side
    128,435x = 76,857,304,592.25
  5. Step 5: Solve for x
    x = 76,857,304,592.25/128,435
  6. Step 6: Final answer
    x = 598,414.02

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.