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Finding the Third Proportional to 178,263 and 388,512

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Solution

The third proportional to 178,263 and 388,512 is: 846,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,263 : 388,512 = 388,512 : x
  2. Step 2: Convert to fraction form
    178,263/388,512 = 388,512/x
  3. Step 3: Cross multiply
    178,263x = 388,512 × 388,512
  4. Step 4: Simplify right side
    178,263x = 150,941,574,144
  5. Step 5: Solve for x
    x = 150,941,574,144/178,263
  6. Step 6: Final answer
    x = 846,735.30

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.