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Finding the Third Proportional to 188,067,816 and 290,612,520

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Solution

The third proportional to 188,067,816 and 290,612,520 is: 449,070,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,067,816 : 290,612,520 = 290,612,520 : x
  2. Step 2: Convert to fraction form
    188,067,816/290,612,520 = 290,612,520/x
  3. Step 3: Cross multiply
    188,067,816x = 290,612,520 × 290,612,520
  4. Step 4: Simplify right side
    188,067,816x = 84,455,636,780,750,400
  5. Step 5: Solve for x
    x = 84,455,636,780,750,400/188,067,816
  6. Step 6: Final answer
    x = 449,070,120.43

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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.