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Finding the Third Proportional to 140,919 and 295,686

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Solution

The third proportional to 140,919 and 295,686 is: 620,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,919 : 295,686 = 295,686 : x
  2. Step 2: Convert to fraction form
    140,919/295,686 = 295,686/x
  3. Step 3: Cross multiply
    140,919x = 295,686 × 295,686
  4. Step 4: Simplify right side
    140,919x = 87,430,210,596
  5. Step 5: Solve for x
    x = 87,430,210,596/140,919
  6. Step 6: Final answer
    x = 620,428.83

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.