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Finding the Third Proportional to 281,283.75 and 421,956

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Solution

The third proportional to 281,283.75 and 421,956 is: 632,979.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,283.75 : 421,956 = 421,956 : x
  2. Step 2: Convert to fraction form
    281,283.75/421,956 = 421,956/x
  3. Step 3: Cross multiply
    281,283.75x = 421,956 × 421,956
  4. Step 4: Simplify right side
    281,283.75x = 178,046,865,936
  5. Step 5: Solve for x
    x = 178,046,865,936/281,283.75
  6. Step 6: Final answer
    x = 632,979.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.