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Finding the Third Proportional to 292,216 and 395,987

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Solution

The third proportional to 292,216 and 395,987 is: 536,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,216 : 395,987 = 395,987 : x
  2. Step 2: Convert to fraction form
    292,216/395,987 = 395,987/x
  3. Step 3: Cross multiply
    292,216x = 395,987 × 395,987
  4. Step 4: Simplify right side
    292,216x = 156,805,704,169
  5. Step 5: Solve for x
    x = 156,805,704,169/292,216
  6. Step 6: Final answer
    x = 536,608.89

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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.