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Finding the Fourth Proportional to 445,377.60, 667,928.16 and 178,997.76

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Solution

The fourth proportional to 445,377.60, 667,928.16 and 178,997.76 is: 268,441.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,377.60 : 667,928.16 = 178,997.76 : x
  2. Step 2: Convert to fraction form
    445,377.60/667,928.16 = 178,997.76/x
  3. Step 3: Cross multiply
    445,377.60x = 667,928.16 × 178,997.76
  4. Step 4: Simplify right side
    445,377.60x = 119,557,644,480.92
  5. Step 5: Solve for x
    x = 119,557,644,480.92/445,377.60
  6. Step 6: Final answer
    x = 268,441.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.