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Finding the Third Proportional to 142,803 and 313,626

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Solution

The third proportional to 142,803 and 313,626 is: 688,789.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,803 : 313,626 = 313,626 : x
  2. Step 2: Convert to fraction form
    142,803/313,626 = 313,626/x
  3. Step 3: Cross multiply
    142,803x = 313,626 × 313,626
  4. Step 4: Simplify right side
    142,803x = 98,361,267,876
  5. Step 5: Solve for x
    x = 98,361,267,876/142,803
  6. Step 6: Final answer
    x = 688,789.93

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.