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Finding the Third Proportional to 139,815,998 and 217,085,277

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Solution

The third proportional to 139,815,998 and 217,085,277 is: 337,057,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,815,998 : 217,085,277 = 217,085,277 : x
  2. Step 2: Convert to fraction form
    139,815,998/217,085,277 = 217,085,277/x
  3. Step 3: Cross multiply
    139,815,998x = 217,085,277 × 217,085,277
  4. Step 4: Simplify right side
    139,815,998x = 47,126,017,490,166,728
  5. Step 5: Solve for x
    x = 47,126,017,490,166,728/139,815,998
  6. Step 6: Final answer
    x = 337,057,405.19

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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.