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Finding the Third Proportional to 128,793.50 and 276,631

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Solution

The third proportional to 128,793.50 and 276,631 is: 594,165.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,793.50 : 276,631 = 276,631 : x
  2. Step 2: Convert to fraction form
    128,793.50/276,631 = 276,631/x
  3. Step 3: Cross multiply
    128,793.50x = 276,631 × 276,631
  4. Step 4: Simplify right side
    128,793.50x = 76,524,710,161
  5. Step 5: Solve for x
    x = 76,524,710,161/128,793.50
  6. Step 6: Final answer
    x = 594,165.93

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.