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Finding the Third Proportional to 155,917 and 251,101.50

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Solution

The third proportional to 155,917 and 251,101.50 is: 404,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,917 : 251,101.50 = 251,101.50 : x
  2. Step 2: Convert to fraction form
    155,917/251,101.50 = 251,101.50/x
  3. Step 3: Cross multiply
    155,917x = 251,101.50 × 251,101.50
  4. Step 4: Simplify right side
    155,917x = 63,051,963,302.25
  5. Step 5: Solve for x
    x = 63,051,963,302.25/155,917
  6. Step 6: Final answer
    x = 404,394.41

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.