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Finding the Fourth Proportional to 445,093.60, 667,640.40 and 178,895.20

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Solution

The fourth proportional to 445,093.60, 667,640.40 and 178,895.20 is: 268,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,093.60 : 667,640.40 = 178,895.20 : x
  2. Step 2: Convert to fraction form
    445,093.60/667,640.40 = 178,895.20/x
  3. Step 3: Cross multiply
    445,093.60x = 667,640.40 × 178,895.20
  4. Step 4: Simplify right side
    445,093.60x = 119,437,662,886.08
  5. Step 5: Solve for x
    x = 119,437,662,886.08/445,093.60
  6. Step 6: Final answer
    x = 268,342.80

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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.