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Finding the Fourth Proportional to 321,899.59, 444,242.20 and 178,659.64

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Solution

The fourth proportional to 321,899.59, 444,242.20 and 178,659.64 is: 246,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,899.59 : 444,242.20 = 178,659.64 : x
  2. Step 2: Convert to fraction form
    321,899.59/444,242.20 = 178,659.64/x
  3. Step 3: Cross multiply
    321,899.59x = 444,242.20 × 178,659.64
  4. Step 4: Simplify right side
    321,899.59x = 79,368,151,524.81
  5. Step 5: Solve for x
    x = 79,368,151,524.81/321,899.59
  6. Step 6: Final answer
    x = 246,561.83

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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.