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Finding the Third Proportional to 191,889 and 418,122

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Solution

The third proportional to 191,889 and 418,122 is: 911,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,889 : 418,122 = 418,122 : x
  2. Step 2: Convert to fraction form
    191,889/418,122 = 418,122/x
  3. Step 3: Cross multiply
    191,889x = 418,122 × 418,122
  4. Step 4: Simplify right side
    191,889x = 174,826,006,884
  5. Step 5: Solve for x
    x = 174,826,006,884/191,889
  6. Step 6: Final answer
    x = 911,078.84

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.