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Finding the Third Proportional to 139,816,002 and 217,085,279

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Solution

The third proportional to 139,816,002 and 217,085,279 is: 337,057,401.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,816,002 : 217,085,279 = 217,085,279 : x
  2. Step 2: Convert to fraction form
    139,816,002/217,085,279 = 217,085,279/x
  3. Step 3: Cross multiply
    139,816,002x = 217,085,279 × 217,085,279
  4. Step 4: Simplify right side
    139,816,002x = 47,126,018,358,507,840
  5. Step 5: Solve for x
    x = 47,126,018,358,507,840/139,816,002
  6. Step 6: Final answer
    x = 337,057,401.76

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.