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Finding the Fourth Proportional to 321,992.40, 444,327.20 and 178,741.20

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Solution

The fourth proportional to 321,992.40, 444,327.20 and 178,741.20 is: 246,650.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,992.40 : 444,327.20 = 178,741.20 : x
  2. Step 2: Convert to fraction form
    321,992.40/444,327.20 = 178,741.20/x
  3. Step 3: Cross multiply
    321,992.40x = 444,327.20 × 178,741.20
  4. Step 4: Simplify right side
    321,992.40x = 79,419,576,920.64
  5. Step 5: Solve for x
    x = 79,419,576,920.64/321,992.40
  6. Step 6: Final answer
    x = 246,650.47

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1.5x scale

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.