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Finding the Third Proportional to 69,428,272 and 149,305,520

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Solution

The third proportional to 69,428,272 and 149,305,520 is: 321,081,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,428,272 : 149,305,520 = 149,305,520 : x
  2. Step 2: Convert to fraction form
    69,428,272/149,305,520 = 149,305,520/x
  3. Step 3: Cross multiply
    69,428,272x = 149,305,520 × 149,305,520
  4. Step 4: Simplify right side
    69,428,272x = 22,292,138,302,470,400
  5. Step 5: Solve for x
    x = 22,292,138,302,470,400/69,428,272
  6. Step 6: Final answer
    x = 321,081,566.06

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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.