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Finding the Third Proportional to 197,718 and 306,408

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Solution

The third proportional to 197,718 and 306,408 is: 474,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,718 : 306,408 = 306,408 : x
  2. Step 2: Convert to fraction form
    197,718/306,408 = 306,408/x
  3. Step 3: Cross multiply
    197,718x = 306,408 × 306,408
  4. Step 4: Simplify right side
    197,718x = 93,885,862,464
  5. Step 5: Solve for x
    x = 93,885,862,464/197,718
  6. Step 6: Final answer
    x = 474,847.32

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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.