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Finding the Third Proportional to 120,728,164 and 261,872,500

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Solution

The third proportional to 120,728,164 and 261,872,500 is: 568,029,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,728,164 : 261,872,500 = 261,872,500 : x
  2. Step 2: Convert to fraction form
    120,728,164/261,872,500 = 261,872,500/x
  3. Step 3: Cross multiply
    120,728,164x = 261,872,500 × 261,872,500
  4. Step 4: Simplify right side
    120,728,164x = 68,577,206,256,250,000
  5. Step 5: Solve for x
    x = 68,577,206,256,250,000/120,728,164
  6. Step 6: Final answer
    x = 568,029,894.47

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.