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Finding the Third Proportional to 140,240 and 211,816

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Solution

The third proportional to 140,240 and 211,816 is: 319,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,240 : 211,816 = 211,816 : x
  2. Step 2: Convert to fraction form
    140,240/211,816 = 211,816/x
  3. Step 3: Cross multiply
    140,240x = 211,816 × 211,816
  4. Step 4: Simplify right side
    140,240x = 44,866,017,856
  5. Step 5: Solve for x
    x = 44,866,017,856/140,240
  6. Step 6: Final answer
    x = 319,923.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.