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Finding the Third Proportional to 128,747,997 and 275,904,702

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Solution

The third proportional to 128,747,997 and 275,904,702 is: 591,258,942.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,747,997 : 275,904,702 = 275,904,702 : x
  2. Step 2: Convert to fraction form
    128,747,997/275,904,702 = 275,904,702/x
  3. Step 3: Cross multiply
    128,747,997x = 275,904,702 × 275,904,702
  4. Step 4: Simplify right side
    128,747,997x = 76,123,404,585,708,800
  5. Step 5: Solve for x
    x = 76,123,404,585,708,800/128,747,997
  6. Step 6: Final answer
    x = 591,258,942.74

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.