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Finding the Third Proportional to 105,720 and 220,184

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Solution

The third proportional to 105,720 and 220,184 is: 458,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720 : 220,184 = 220,184 : x
  2. Step 2: Convert to fraction form
    105,720/220,184 = 220,184/x
  3. Step 3: Cross multiply
    105,720x = 220,184 × 220,184
  4. Step 4: Simplify right side
    105,720x = 48,480,993,856
  5. Step 5: Solve for x
    x = 48,480,993,856/105,720
  6. Step 6: Final answer
    x = 458,579.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.