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Finding the Third Proportional to 194,512 and 422,221

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Solution

The third proportional to 194,512 and 422,221 is: 916,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,512 : 422,221 = 422,221 : x
  2. Step 2: Convert to fraction form
    194,512/422,221 = 422,221/x
  3. Step 3: Cross multiply
    194,512x = 422,221 × 422,221
  4. Step 4: Simplify right side
    194,512x = 178,270,572,841
  5. Step 5: Solve for x
    x = 178,270,572,841/194,512
  6. Step 6: Final answer
    x = 916,501.67

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.