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Finding the Third Proportional to 79,398,720 and 171,987,928

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Solution

The third proportional to 79,398,720 and 171,987,928 is: 372,548,164.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,398,720 : 171,987,928 = 171,987,928 : x
  2. Step 2: Convert to fraction form
    79,398,720/171,987,928 = 171,987,928/x
  3. Step 3: Cross multiply
    79,398,720x = 171,987,928 × 171,987,928
  4. Step 4: Simplify right side
    79,398,720x = 29,579,847,377,733,184
  5. Step 5: Solve for x
    x = 29,579,847,377,733,184/79,398,720
  6. Step 6: Final answer
    x = 372,548,164.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.