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Finding the Third Proportional to 210,208 and 302,190

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Solution

The third proportional to 210,208 and 302,190 is: 434,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,208 : 302,190 = 302,190 : x
  2. Step 2: Convert to fraction form
    210,208/302,190 = 302,190/x
  3. Step 3: Cross multiply
    210,208x = 302,190 × 302,190
  4. Step 4: Simplify right side
    210,208x = 91,318,796,100
  5. Step 5: Solve for x
    x = 91,318,796,100/210,208
  6. Step 6: Final answer
    x = 434,421.13

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.