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Finding the Third Proportional to 291,890 and 372,973

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Solution

The third proportional to 291,890 and 372,973 is: 476,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,890 : 372,973 = 372,973 : x
  2. Step 2: Convert to fraction form
    291,890/372,973 = 372,973/x
  3. Step 3: Cross multiply
    291,890x = 372,973 × 372,973
  4. Step 4: Simplify right side
    291,890x = 139,108,858,729
  5. Step 5: Solve for x
    x = 139,108,858,729/291,890
  6. Step 6: Final answer
    x = 476,579.73

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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.