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Finding the Third Proportional to 55,663,980 and 121,207,906

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Solution

The third proportional to 55,663,980 and 121,207,906 is: 263,929,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,663,980 : 121,207,906 = 121,207,906 : x
  2. Step 2: Convert to fraction form
    55,663,980/121,207,906 = 121,207,906/x
  3. Step 3: Cross multiply
    55,663,980x = 121,207,906 × 121,207,906
  4. Step 4: Simplify right side
    55,663,980x = 14,691,356,476,904,836
  5. Step 5: Solve for x
    x = 14,691,356,476,904,836/55,663,980
  6. Step 6: Final answer
    x = 263,929,321.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.