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Finding the Third Proportional to 211,592.25 and 287,043.75

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Solution

The third proportional to 211,592.25 and 287,043.75 is: 389,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,592.25 : 287,043.75 = 287,043.75 : x
  2. Step 2: Convert to fraction form
    211,592.25/287,043.75 = 287,043.75/x
  3. Step 3: Cross multiply
    211,592.25x = 287,043.75 × 287,043.75
  4. Step 4: Simplify right side
    211,592.25x = 82,394,114,414.06
  5. Step 5: Solve for x
    x = 82,394,114,414.06/211,592.25
  6. Step 6: Final answer
    x = 389,400.44

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.