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Finding the Third Proportional to 131,440 and 287,204

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Solution

The third proportional to 131,440 and 287,204 is: 627,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,440 : 287,204 = 287,204 : x
  2. Step 2: Convert to fraction form
    131,440/287,204 = 287,204/x
  3. Step 3: Cross multiply
    131,440x = 287,204 × 287,204
  4. Step 4: Simplify right side
    131,440x = 82,486,137,616
  5. Step 5: Solve for x
    x = 82,486,137,616/131,440
  6. Step 6: Final answer
    x = 627,557.35

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.