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Finding the Third Proportional to 72,809,419 and 156,424,794

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Solution

The third proportional to 72,809,419 and 156,424,794 is: 336,065,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809,419 : 156,424,794 = 156,424,794 : x
  2. Step 2: Convert to fraction form
    72,809,419/156,424,794 = 156,424,794/x
  3. Step 3: Cross multiply
    72,809,419x = 156,424,794 × 156,424,794
  4. Step 4: Simplify right side
    72,809,419x = 24,468,716,177,942,436
  5. Step 5: Solve for x
    x = 24,468,716,177,942,436/72,809,419
  6. Step 6: Final answer
    x = 336,065,257.96

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.