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Finding the Third Proportional to 118,718 and 255,868

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Solution

The third proportional to 118,718 and 255,868 is: 551,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,718 : 255,868 = 255,868 : x
  2. Step 2: Convert to fraction form
    118,718/255,868 = 255,868/x
  3. Step 3: Cross multiply
    118,718x = 255,868 × 255,868
  4. Step 4: Simplify right side
    118,718x = 65,468,433,424
  5. Step 5: Solve for x
    x = 65,468,433,424/118,718
  6. Step 6: Final answer
    x = 551,461.73

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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.