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Finding the Third Proportional to 178,470 and 371,728

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Solution

The third proportional to 178,470 and 371,728 is: 774,257.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,470 : 371,728 = 371,728 : x
  2. Step 2: Convert to fraction form
    178,470/371,728 = 371,728/x
  3. Step 3: Cross multiply
    178,470x = 371,728 × 371,728
  4. Step 4: Simplify right side
    178,470x = 138,181,705,984
  5. Step 5: Solve for x
    x = 138,181,705,984/178,470
  6. Step 6: Final answer
    x = 774,257.33

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.