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Finding the Third Proportional to 135,039.75 and 294,378

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Solution

The third proportional to 135,039.75 and 294,378 is: 641,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,039.75 : 294,378 = 294,378 : x
  2. Step 2: Convert to fraction form
    135,039.75/294,378 = 294,378/x
  3. Step 3: Cross multiply
    135,039.75x = 294,378 × 294,378
  4. Step 4: Simplify right side
    135,039.75x = 86,658,406,884
  5. Step 5: Solve for x
    x = 86,658,406,884/135,039.75
  6. Step 6: Final answer
    x = 641,725.17

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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.