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Finding the Third Proportional to 190,512 and 402,408

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Solution

The third proportional to 190,512 and 402,408 is: 849,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,512 : 402,408 = 402,408 : x
  2. Step 2: Convert to fraction form
    190,512/402,408 = 402,408/x
  3. Step 3: Cross multiply
    190,512x = 402,408 × 402,408
  4. Step 4: Simplify right side
    190,512x = 161,932,198,464
  5. Step 5: Solve for x
    x = 161,932,198,464/190,512
  6. Step 6: Final answer
    x = 849,984.24

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.