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Finding the Third Proportional to 287,442 and 441,207

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Solution

The third proportional to 287,442 and 441,207 is: 677,227.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,442 : 441,207 = 441,207 : x
  2. Step 2: Convert to fraction form
    287,442/441,207 = 441,207/x
  3. Step 3: Cross multiply
    287,442x = 441,207 × 441,207
  4. Step 4: Simplify right side
    287,442x = 194,663,616,849
  5. Step 5: Solve for x
    x = 194,663,616,849/287,442
  6. Step 6: Final answer
    x = 677,227.46

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.