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Finding the Third Proportional to 142,105.50 and 305,703

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Solution

The third proportional to 142,105.50 and 305,703 is: 657,640.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,105.50 : 305,703 = 305,703 : x
  2. Step 2: Convert to fraction form
    142,105.50/305,703 = 305,703/x
  3. Step 3: Cross multiply
    142,105.50x = 305,703 × 305,703
  4. Step 4: Simplify right side
    142,105.50x = 93,454,324,209
  5. Step 5: Solve for x
    x = 93,454,324,209/142,105.50
  6. Step 6: Final answer
    x = 657,640.44

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.