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Finding the Third Proportional to 190,941 and 420,003

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Solution

The third proportional to 190,941 and 420,003 is: 923,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,941 : 420,003 = 420,003 : x
  2. Step 2: Convert to fraction form
    190,941/420,003 = 420,003/x
  3. Step 3: Cross multiply
    190,941x = 420,003 × 420,003
  4. Step 4: Simplify right side
    190,941x = 176,402,520,009
  5. Step 5: Solve for x
    x = 176,402,520,009/190,941
  6. Step 6: Final answer
    x = 923,858.78

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.