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Finding the Third Proportional to 99,629,661 and 218,873,310

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Solution

The third proportional to 99,629,661 and 218,873,310 is: 480,835,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,629,661 : 218,873,310 = 218,873,310 : x
  2. Step 2: Convert to fraction form
    99,629,661/218,873,310 = 218,873,310/x
  3. Step 3: Cross multiply
    99,629,661x = 218,873,310 × 218,873,310
  4. Step 4: Simplify right side
    99,629,661x = 47,905,525,830,356,096
  5. Step 5: Solve for x
    x = 47,905,525,830,356,096/99,629,661
  6. Step 6: Final answer
    x = 480,835,981.47

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.