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Finding the Third Proportional to 155,211 and 229,905

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Solution

The third proportional to 155,211 and 229,905 is: 340,544.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,211 : 229,905 = 229,905 : x
  2. Step 2: Convert to fraction form
    155,211/229,905 = 229,905/x
  3. Step 3: Cross multiply
    155,211x = 229,905 × 229,905
  4. Step 4: Simplify right side
    155,211x = 52,856,309,025
  5. Step 5: Solve for x
    x = 52,856,309,025/155,211
  6. Step 6: Final answer
    x = 340,544.86

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.