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Finding the Third Proportional to 80,748,790 and 177,129,436

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Solution

The third proportional to 80,748,790 and 177,129,436 is: 388,548,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,748,790 : 177,129,436 = 177,129,436 : x
  2. Step 2: Convert to fraction form
    80,748,790/177,129,436 = 177,129,436/x
  3. Step 3: Cross multiply
    80,748,790x = 177,129,436 × 177,129,436
  4. Step 4: Simplify right side
    80,748,790x = 31,374,837,097,678,096
  5. Step 5: Solve for x
    x = 31,374,837,097,678,096/80,748,790
  6. Step 6: Final answer
    x = 388,548,696.49

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.