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Finding the Third Proportional to 149,205,944 and 321,086,711

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Solution

The third proportional to 149,205,944 and 321,086,711 is: 690,968,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,205,944 : 321,086,711 = 321,086,711 : x
  2. Step 2: Convert to fraction form
    149,205,944/321,086,711 = 321,086,711/x
  3. Step 3: Cross multiply
    149,205,944x = 321,086,711 × 321,086,711
  4. Step 4: Simplify right side
    149,205,944x = 103,096,675,980,797,520
  5. Step 5: Solve for x
    x = 103,096,675,980,797,520/149,205,944
  6. Step 6: Final answer
    x = 690,968,960.20

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.