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Finding the Third Proportional to 198,037 and 427,639

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Solution

The third proportional to 198,037 and 427,639 is: 923,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,037 : 427,639 = 427,639 : x
  2. Step 2: Convert to fraction form
    198,037/427,639 = 427,639/x
  3. Step 3: Cross multiply
    198,037x = 427,639 × 427,639
  4. Step 4: Simplify right side
    198,037x = 182,875,114,321
  5. Step 5: Solve for x
    x = 182,875,114,321/198,037
  6. Step 6: Final answer
    x = 923,439.13

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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.