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Finding the Third Proportional to 253,367,964 and 391,687,170

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Solution

The third proportional to 253,367,964 and 391,687,170 is: 605,517,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,367,964 : 391,687,170 = 391,687,170 : x
  2. Step 2: Convert to fraction form
    253,367,964/391,687,170 = 391,687,170/x
  3. Step 3: Cross multiply
    253,367,964x = 391,687,170 × 391,687,170
  4. Step 4: Simplify right side
    253,367,964x = 153,418,839,142,608,896
  5. Step 5: Solve for x
    x = 153,418,839,142,608,896/253,367,964
  6. Step 6: Final answer
    x = 605,517,906.53

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.