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Finding the Third Proportional to 143,080 and 221,446

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Solution

The third proportional to 143,080 and 221,446 is: 342,733.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,080 : 221,446 = 221,446 : x
  2. Step 2: Convert to fraction form
    143,080/221,446 = 221,446/x
  3. Step 3: Cross multiply
    143,080x = 221,446 × 221,446
  4. Step 4: Simplify right side
    143,080x = 49,038,330,916
  5. Step 5: Solve for x
    x = 49,038,330,916/143,080
  6. Step 6: Final answer
    x = 342,733.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.