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Finding the Third Proportional to 211,420 and 327,579

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Solution

The third proportional to 211,420 and 327,579 is: 507,558.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,420 : 327,579 = 327,579 : x
  2. Step 2: Convert to fraction form
    211,420/327,579 = 327,579/x
  3. Step 3: Cross multiply
    211,420x = 327,579 × 327,579
  4. Step 4: Simplify right side
    211,420x = 107,308,001,241
  5. Step 5: Solve for x
    x = 107,308,001,241/211,420
  6. Step 6: Final answer
    x = 507,558.42

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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.