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Finding the Third Proportional to 178,440.75 and 276,169.50

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Solution

The third proportional to 178,440.75 and 276,169.50 is: 427,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,440.75 : 276,169.50 = 276,169.50 : x
  2. Step 2: Convert to fraction form
    178,440.75/276,169.50 = 276,169.50/x
  3. Step 3: Cross multiply
    178,440.75x = 276,169.50 × 276,169.50
  4. Step 4: Simplify right side
    178,440.75x = 76,269,592,730.25
  5. Step 5: Solve for x
    x = 76,269,592,730.25/178,440.75
  6. Step 6: Final answer
    x = 427,422.51

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.