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Finding the Third Proportional to 121,330,400 and 259,666,910

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Solution

The third proportional to 121,330,400 and 259,666,910 is: 555,729,678.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,330,400 : 259,666,910 = 259,666,910 : x
  2. Step 2: Convert to fraction form
    121,330,400/259,666,910 = 259,666,910/x
  3. Step 3: Cross multiply
    121,330,400x = 259,666,910 × 259,666,910
  4. Step 4: Simplify right side
    121,330,400x = 67,426,904,148,948,096
  5. Step 5: Solve for x
    x = 67,426,904,148,948,096/121,330,400
  6. Step 6: Final answer
    x = 555,729,678.21

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.