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Finding the Third Proportional to 128,926,226 and 199,925,067

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Solution

The third proportional to 128,926,226 and 199,925,067 is: 310,022,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926,226 : 199,925,067 = 199,925,067 : x
  2. Step 2: Convert to fraction form
    128,926,226/199,925,067 = 199,925,067/x
  3. Step 3: Cross multiply
    128,926,226x = 199,925,067 × 199,925,067
  4. Step 4: Simplify right side
    128,926,226x = 39,970,032,414,954,488
  5. Step 5: Solve for x
    x = 39,970,032,414,954,488/128,926,226
  6. Step 6: Final answer
    x = 310,022,511.75

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Why These Related Problems?

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