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Finding the Third Proportional to 98,740 and 217,168

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Solution

The third proportional to 98,740 and 217,168 is: 477,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,740 : 217,168 = 217,168 : x
  2. Step 2: Convert to fraction form
    98,740/217,168 = 217,168/x
  3. Step 3: Cross multiply
    98,740x = 217,168 × 217,168
  4. Step 4: Simplify right side
    98,740x = 47,161,940,224
  5. Step 5: Solve for x
    x = 47,161,940,224/98,740
  6. Step 6: Final answer
    x = 477,637.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.