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Finding the Third Proportional to 205,700 and 310,743

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Solution

The third proportional to 205,700 and 310,743 is: 469,427.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,700 : 310,743 = 310,743 : x
  2. Step 2: Convert to fraction form
    205,700/310,743 = 310,743/x
  3. Step 3: Cross multiply
    205,700x = 310,743 × 310,743
  4. Step 4: Simplify right side
    205,700x = 96,561,212,049
  5. Step 5: Solve for x
    x = 96,561,212,049/205,700
  6. Step 6: Final answer
    x = 469,427.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.