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Finding the Third Proportional to 171,345,781 and 261,036,177

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Solution

The third proportional to 171,345,781 and 261,036,177 is: 397,674,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,345,781 : 261,036,177 = 261,036,177 : x
  2. Step 2: Convert to fraction form
    171,345,781/261,036,177 = 261,036,177/x
  3. Step 3: Cross multiply
    171,345,781x = 261,036,177 × 261,036,177
  4. Step 4: Simplify right side
    171,345,781x = 68,139,885,702,775,328
  5. Step 5: Solve for x
    x = 68,139,885,702,775,328/171,345,781
  6. Step 6: Final answer
    x = 397,674,721.29

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.