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Finding the Third Proportional to 291,600 and 372,600

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Solution

The third proportional to 291,600 and 372,600 is: 476,100

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,600 : 372,600 = 372,600 : x
  2. Step 2: Convert to fraction form
    291,600/372,600 = 372,600/x
  3. Step 3: Cross multiply
    291,600x = 372,600 × 372,600
  4. Step 4: Simplify right side
    291,600x = 138,830,760,000
  5. Step 5: Solve for x
    x = 138,830,760,000/291,600
  6. Step 6: Final answer
    x = 476,100

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.