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Finding the Third Proportional to 179,426 and 389,380

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Solution

The third proportional to 179,426 and 389,380 is: 845,010.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,426 : 389,380 = 389,380 : x
  2. Step 2: Convert to fraction form
    179,426/389,380 = 389,380/x
  3. Step 3: Cross multiply
    179,426x = 389,380 × 389,380
  4. Step 4: Simplify right side
    179,426x = 151,616,784,400
  5. Step 5: Solve for x
    x = 151,616,784,400/179,426
  6. Step 6: Final answer
    x = 845,010.11

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.