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Finding the Third Proportional to 90,279 and 190,440

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Solution

The third proportional to 90,279 and 190,440 is: 401,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,279 : 190,440 = 190,440 : x
  2. Step 2: Convert to fraction form
    90,279/190,440 = 190,440/x
  3. Step 3: Cross multiply
    90,279x = 190,440 × 190,440
  4. Step 4: Simplify right side
    90,279x = 36,267,393,600
  5. Step 5: Solve for x
    x = 36,267,393,600/90,279
  6. Step 6: Final answer
    x = 401,725.69

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.