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Finding the Third Proportional to 198,037.50 and 427,640

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Solution

The third proportional to 198,037.50 and 427,640 is: 923,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,037.50 : 427,640 = 427,640 : x
  2. Step 2: Convert to fraction form
    198,037.50/427,640 = 427,640/x
  3. Step 3: Cross multiply
    198,037.50x = 427,640 × 427,640
  4. Step 4: Simplify right side
    198,037.50x = 182,875,969,600
  5. Step 5: Solve for x
    x = 182,875,969,600/198,037.50
  6. Step 6: Final answer
    x = 923,441.11

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.