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Finding the Third Proportional to 253,367,970 and 391,687,179

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Solution

The third proportional to 253,367,970 and 391,687,179 is: 605,517,920.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,367,970 : 391,687,179 = 391,687,179 : x
  2. Step 2: Convert to fraction form
    253,367,970/391,687,179 = 391,687,179/x
  3. Step 3: Cross multiply
    253,367,970x = 391,687,179 × 391,687,179
  4. Step 4: Simplify right side
    253,367,970x = 153,418,846,192,978,048
  5. Step 5: Solve for x
    x = 153,418,846,192,978,048/253,367,970
  6. Step 6: Final answer
    x = 605,517,920.02

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