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Finding the Third Proportional to 142,626 and 221,827

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Solution

The third proportional to 142,626 and 221,827 is: 345,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,626 : 221,827 = 221,827 : x
  2. Step 2: Convert to fraction form
    142,626/221,827 = 221,827/x
  3. Step 3: Cross multiply
    142,626x = 221,827 × 221,827
  4. Step 4: Simplify right side
    142,626x = 49,207,217,929
  5. Step 5: Solve for x
    x = 49,207,217,929/142,626
  6. Step 6: Final answer
    x = 345,008.75

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.