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Finding the Third Proportional to 295,742.75 and 641,311

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Solution

The third proportional to 295,742.75 and 641,311 is: 1,390,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,742.75 : 641,311 = 641,311 : x
  2. Step 2: Convert to fraction form
    295,742.75/641,311 = 641,311/x
  3. Step 3: Cross multiply
    295,742.75x = 641,311 × 641,311
  4. Step 4: Simplify right side
    295,742.75x = 411,279,798,721
  5. Step 5: Solve for x
    x = 411,279,798,721/295,742.75
  6. Step 6: Final answer
    x = 1,390,667.39

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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.