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Finding the Third Proportional to 220,830 and 349,821

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Solution

The third proportional to 220,830 and 349,821 is: 554,158.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,830 : 349,821 = 349,821 : x
  2. Step 2: Convert to fraction form
    220,830/349,821 = 349,821/x
  3. Step 3: Cross multiply
    220,830x = 349,821 × 349,821
  4. Step 4: Simplify right side
    220,830x = 122,374,732,041
  5. Step 5: Solve for x
    x = 122,374,732,041/220,830
  6. Step 6: Final answer
    x = 554,158.09

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.