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Finding the Third Proportional to 135,429 and 291,668

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Solution

The third proportional to 135,429 and 291,668 is: 628,153.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,429 : 291,668 = 291,668 : x
  2. Step 2: Convert to fraction form
    135,429/291,668 = 291,668/x
  3. Step 3: Cross multiply
    135,429x = 291,668 × 291,668
  4. Step 4: Simplify right side
    135,429x = 85,070,222,224
  5. Step 5: Solve for x
    x = 85,070,222,224/135,429
  6. Step 6: Final answer
    x = 628,153.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.