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Finding the Third Proportional to 179,784 and 391,279

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Solution

The third proportional to 179,784 and 391,279 is: 851,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,784 : 391,279 = 391,279 : x
  2. Step 2: Convert to fraction form
    179,784/391,279 = 391,279/x
  3. Step 3: Cross multiply
    179,784x = 391,279 × 391,279
  4. Step 4: Simplify right side
    179,784x = 153,099,255,841
  5. Step 5: Solve for x
    x = 153,099,255,841/179,784
  6. Step 6: Final answer
    x = 851,573.31

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.