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Finding the Third Proportional to 197,706 and 306,390

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Solution

The third proportional to 197,706 and 306,390 is: 474,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,706 : 306,390 = 306,390 : x
  2. Step 2: Convert to fraction form
    197,706/306,390 = 306,390/x
  3. Step 3: Cross multiply
    197,706x = 306,390 × 306,390
  4. Step 4: Simplify right side
    197,706x = 93,874,832,100
  5. Step 5: Solve for x
    x = 93,874,832,100/197,706
  6. Step 6: Final answer
    x = 474,820.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.