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Finding the Third Proportional to 121,044,154 and 259,721,816

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Solution

The third proportional to 121,044,154 and 259,721,816 is: 557,279,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,044,154 : 259,721,816 = 259,721,816 : x
  2. Step 2: Convert to fraction form
    121,044,154/259,721,816 = 259,721,816/x
  3. Step 3: Cross multiply
    121,044,154x = 259,721,816 × 259,721,816
  4. Step 4: Simplify right side
    121,044,154x = 67,455,421,706,337,856
  5. Step 5: Solve for x
    x = 67,455,421,706,337,856/121,044,154
  6. Step 6: Final answer
    x = 557,279,467.68

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.