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Finding the Third Proportional to 221,965 and 347,822

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Solution

The third proportional to 221,965 and 347,822 is: 545,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,965 : 347,822 = 347,822 : x
  2. Step 2: Convert to fraction form
    221,965/347,822 = 347,822/x
  3. Step 3: Cross multiply
    221,965x = 347,822 × 347,822
  4. Step 4: Simplify right side
    221,965x = 120,980,143,684
  5. Step 5: Solve for x
    x = 120,980,143,684/221,965
  6. Step 6: Final answer
    x = 545,041.53

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.