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Finding the Third Proportional to 120,392 and 187,288

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Solution

The third proportional to 120,392 and 187,288 is: 291,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,392 : 187,288 = 187,288 : x
  2. Step 2: Convert to fraction form
    120,392/187,288 = 187,288/x
  3. Step 3: Cross multiply
    120,392x = 187,288 × 187,288
  4. Step 4: Simplify right side
    120,392x = 35,076,794,944
  5. Step 5: Solve for x
    x = 35,076,794,944/120,392
  6. Step 6: Final answer
    x = 291,354.87

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.