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Finding the Third Proportional to 190,809 and 376,821

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Solution

The third proportional to 190,809 and 376,821 is: 744,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,809 : 376,821 = 376,821 : x
  2. Step 2: Convert to fraction form
    190,809/376,821 = 376,821/x
  3. Step 3: Cross multiply
    190,809x = 376,821 × 376,821
  4. Step 4: Simplify right side
    190,809x = 141,994,066,041
  5. Step 5: Solve for x
    x = 141,994,066,041/190,809
  6. Step 6: Final answer
    x = 744,168.60

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.