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Finding the Fourth Proportional to 321,993.40, 444,328.58 and 178,742.20

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Solution

The fourth proportional to 321,993.40, 444,328.58 and 178,742.20 is: 246,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,993.40 : 444,328.58 = 178,742.20 : x
  2. Step 2: Convert to fraction form
    321,993.40/444,328.58 = 178,742.20/x
  3. Step 3: Cross multiply
    321,993.40x = 444,328.58 × 178,742.20
  4. Step 4: Simplify right side
    321,993.40x = 79,420,267,912.08
  5. Step 5: Solve for x
    x = 79,420,267,912.08/321,993.40
  6. Step 6: Final answer
    x = 246,651.85

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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.