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Finding the Fourth Proportional to 321,899.85, 444,242.55 and 178,659.90

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Solution

The fourth proportional to 321,899.85, 444,242.55 and 178,659.90 is: 246,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,899.85 : 444,242.55 = 178,659.90 : x
  2. Step 2: Convert to fraction form
    321,899.85/444,242.55 = 178,659.90/x
  3. Step 3: Cross multiply
    321,899.85x = 444,242.55 × 178,659.90
  4. Step 4: Simplify right side
    321,899.85x = 79,368,329,558.75
  5. Step 5: Solve for x
    x = 79,368,329,558.75/321,899.85
  6. Step 6: Final answer
    x = 246,562.18

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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.