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Finding the Fourth Proportional to 328,736.70, 492,764.85 and 178,659.90

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Solution

The fourth proportional to 328,736.70, 492,764.85 and 178,659.90 is: 267,804.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,736.70 : 492,764.85 = 178,659.90 : x
  2. Step 2: Convert to fraction form
    328,736.70/492,764.85 = 178,659.90/x
  3. Step 3: Cross multiply
    328,736.70x = 492,764.85 × 178,659.90
  4. Step 4: Simplify right side
    328,736.70x = 88,037,318,824.52
  5. Step 5: Solve for x
    x = 88,037,318,824.52/328,736.70
  6. Step 6: Final answer
    x = 267,804.96

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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.