Home / 321,245.21-443,336.13-178,002.20

Finding the Fourth Proportional to 321,245.21, 443,336.13 and 178,002.20

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Solution

The fourth proportional to 321,245.21, 443,336.13 and 178,002.20 is: 245,652.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,245.21 : 443,336.13 = 178,002.20 : x
  2. Step 2: Convert to fraction form
    321,245.21/443,336.13 = 178,002.20/x
  3. Step 3: Cross multiply
    321,245.21x = 443,336.13 × 178,002.20
  4. Step 4: Simplify right side
    321,245.21x = 78,914,804,262.81
  5. Step 5: Solve for x
    x = 78,914,804,262.81/321,245.21
  6. Step 6: Final answer
    x = 245,652.86

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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.