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Finding the Third Proportional to 68,990 and 151,228

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Solution

The third proportional to 68,990 and 151,228 is: 331,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990 : 151,228 = 151,228 : x
  2. Step 2: Convert to fraction form
    68,990/151,228 = 151,228/x
  3. Step 3: Cross multiply
    68,990x = 151,228 × 151,228
  4. Step 4: Simplify right side
    68,990x = 22,869,907,984
  5. Step 5: Solve for x
    x = 22,869,907,984/68,990
  6. Step 6: Final answer
    x = 331,495.98

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.