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Finding the Third Proportional to 171,345,821 and 261,036,235

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Solution

The third proportional to 171,345,821 and 261,036,235 is: 397,674,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,345,821 : 261,036,235 = 261,036,235 : x
  2. Step 2: Convert to fraction form
    171,345,821/261,036,235 = 261,036,235/x
  3. Step 3: Cross multiply
    171,345,821x = 261,036,235 × 261,036,235
  4. Step 4: Simplify right side
    171,345,821x = 68,139,915,982,975,224
  5. Step 5: Solve for x
    x = 68,139,915,982,975,224/171,345,821
  6. Step 6: Final answer
    x = 397,674,805.17

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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.