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Finding the Third Proportional to 8,215,121 and 18,319,156

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Solution

The third proportional to 8,215,121 and 18,319,156 is: 40,850,460.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215,121 : 18,319,156 = 18,319,156 : x
  2. Step 2: Convert to fraction form
    8,215,121/18,319,156 = 18,319,156/x
  3. Step 3: Cross multiply
    8,215,121x = 18,319,156 × 18,319,156
  4. Step 4: Simplify right side
    8,215,121x = 335,591,476,552,336
  5. Step 5: Solve for x
    x = 335,591,476,552,336/8,215,121
  6. Step 6: Final answer
    x = 40,850,460.58

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.