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Finding the Third Proportional to 291,256 and 439,552

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Solution

The third proportional to 291,256 and 439,552 is: 663,354.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,256 : 439,552 = 439,552 : x
  2. Step 2: Convert to fraction form
    291,256/439,552 = 439,552/x
  3. Step 3: Cross multiply
    291,256x = 439,552 × 439,552
  4. Step 4: Simplify right side
    291,256x = 193,205,960,704
  5. Step 5: Solve for x
    x = 193,205,960,704/291,256
  6. Step 6: Final answer
    x = 663,354.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.