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Finding the Third Proportional to 143,418 and 210,186

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Solution

The third proportional to 143,418 and 210,186 is: 308,037.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,418 : 210,186 = 210,186 : x
  2. Step 2: Convert to fraction form
    143,418/210,186 = 210,186/x
  3. Step 3: Cross multiply
    143,418x = 210,186 × 210,186
  4. Step 4: Simplify right side
    143,418x = 44,178,154,596
  5. Step 5: Solve for x
    x = 44,178,154,596/143,418
  6. Step 6: Final answer
    x = 308,037.73

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.