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Finding the Third Proportional to 193,695 and 421,700

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Solution

The third proportional to 193,695 and 421,700 is: 918,097.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,695 : 421,700 = 421,700 : x
  2. Step 2: Convert to fraction form
    193,695/421,700 = 421,700/x
  3. Step 3: Cross multiply
    193,695x = 421,700 × 421,700
  4. Step 4: Simplify right side
    193,695x = 177,830,890,000
  5. Step 5: Solve for x
    x = 177,830,890,000/193,695
  6. Step 6: Final answer
    x = 918,097.47

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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.