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Finding the Third Proportional to 180,337 and 391,778

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Solution

The third proportional to 180,337 and 391,778 is: 851,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,337 : 391,778 = 391,778 : x
  2. Step 2: Convert to fraction form
    180,337/391,778 = 391,778/x
  3. Step 3: Cross multiply
    180,337x = 391,778 × 391,778
  4. Step 4: Simplify right side
    180,337x = 153,490,001,284
  5. Step 5: Solve for x
    x = 153,490,001,284/180,337
  6. Step 6: Final answer
    x = 851,128.73

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.