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Finding the Third Proportional to 178,432.50 and 256,470.75

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Solution

The third proportional to 178,432.50 and 256,470.75 is: 368,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,432.50 : 256,470.75 = 256,470.75 : x
  2. Step 2: Convert to fraction form
    178,432.50/256,470.75 = 256,470.75/x
  3. Step 3: Cross multiply
    178,432.50x = 256,470.75 × 256,470.75
  4. Step 4: Simplify right side
    178,432.50x = 65,777,245,605.56
  5. Step 5: Solve for x
    x = 65,777,245,605.56/178,432.50
  6. Step 6: Final answer
    x = 368,639.38

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.