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Finding the Third Proportional to 122,129,261 and 263,389,858

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Solution

The third proportional to 122,129,261 and 263,389,858 is: 568,039,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,129,261 : 263,389,858 = 263,389,858 : x
  2. Step 2: Convert to fraction form
    122,129,261/263,389,858 = 263,389,858/x
  3. Step 3: Cross multiply
    122,129,261x = 263,389,858 × 263,389,858
  4. Step 4: Simplify right side
    122,129,261x = 69,374,217,297,260,160
  5. Step 5: Solve for x
    x = 69,374,217,297,260,160/122,129,261
  6. Step 6: Final answer
    x = 568,039,278.46

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.