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Finding the Third Proportional to 142,586 and 199,338

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Solution

The third proportional to 142,586 and 199,338 is: 278,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,586 : 199,338 = 199,338 : x
  2. Step 2: Convert to fraction form
    142,586/199,338 = 199,338/x
  3. Step 3: Cross multiply
    142,586x = 199,338 × 199,338
  4. Step 4: Simplify right side
    142,586x = 39,735,638,244
  5. Step 5: Solve for x
    x = 39,735,638,244/142,586
  6. Step 6: Final answer
    x = 278,678.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.