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Finding the Fourth Proportional to 321,785.60, 444,090.88 and 178,592

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Solution

The fourth proportional to 321,785.60, 444,090.88 and 178,592 is: 246,471.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,785.60 : 444,090.88 = 178,592 : x
  2. Step 2: Convert to fraction form
    321,785.60/444,090.88 = 178,592/x
  3. Step 3: Cross multiply
    321,785.60x = 444,090.88 × 178,592
  4. Step 4: Simplify right side
    321,785.60x = 79,311,078,440.96
  5. Step 5: Solve for x
    x = 79,311,078,440.96/321,785.60
  6. Step 6: Final answer
    x = 246,471.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.