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Finding the Third Proportional to 291,260 and 441,400

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Solution

The third proportional to 291,260 and 441,400 is: 668,934.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,260 : 441,400 = 441,400 : x
  2. Step 2: Convert to fraction form
    291,260/441,400 = 441,400/x
  3. Step 3: Cross multiply
    291,260x = 441,400 × 441,400
  4. Step 4: Simplify right side
    291,260x = 194,833,960,000
  5. Step 5: Solve for x
    x = 194,833,960,000/291,260
  6. Step 6: Final answer
    x = 668,934.83

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.