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Finding the Third Proportional to 205,622 and 306,721

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Solution

The third proportional to 205,622 and 306,721 is: 457,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,622 : 306,721 = 306,721 : x
  2. Step 2: Convert to fraction form
    205,622/306,721 = 306,721/x
  3. Step 3: Cross multiply
    205,622x = 306,721 × 306,721
  4. Step 4: Simplify right side
    205,622x = 94,077,771,841
  5. Step 5: Solve for x
    x = 94,077,771,841/205,622
  6. Step 6: Final answer
    x = 457,527.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.