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Finding the Third Proportional to 77,928,291 and 169,420,416

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Solution

The third proportional to 77,928,291 and 169,420,416 is: 368,329,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928,291 : 169,420,416 = 169,420,416 : x
  2. Step 2: Convert to fraction form
    77,928,291/169,420,416 = 169,420,416/x
  3. Step 3: Cross multiply
    77,928,291x = 169,420,416 × 169,420,416
  4. Step 4: Simplify right side
    77,928,291x = 28,703,277,357,613,056
  5. Step 5: Solve for x
    x = 28,703,277,357,613,056/77,928,291
  6. Step 6: Final answer
    x = 368,329,357.53

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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.