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Finding the Third Proportional to 135,970 and 295,290

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Solution

The third proportional to 135,970 and 295,290 is: 641,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,970 : 295,290 = 295,290 : x
  2. Step 2: Convert to fraction form
    135,970/295,290 = 295,290/x
  3. Step 3: Cross multiply
    135,970x = 295,290 × 295,290
  4. Step 4: Simplify right side
    135,970x = 87,196,184,100
  5. Step 5: Solve for x
    x = 87,196,184,100/135,970
  6. Step 6: Final answer
    x = 641,289.87

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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.