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Finding the Third Proportional to 130,686 and 280,812

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Solution

The third proportional to 130,686 and 280,812 is: 603,395.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,686 : 280,812 = 280,812 : x
  2. Step 2: Convert to fraction form
    130,686/280,812 = 280,812/x
  3. Step 3: Cross multiply
    130,686x = 280,812 × 280,812
  4. Step 4: Simplify right side
    130,686x = 78,855,379,344
  5. Step 5: Solve for x
    x = 78,855,379,344/130,686
  6. Step 6: Final answer
    x = 603,395.77

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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.