Home / 321,374.20-443,480.16-178,132.72

Finding the Fourth Proportional to 321,374.20, 443,480.16 and 178,132.72

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Solution

The fourth proportional to 321,374.20, 443,480.16 and 178,132.72 is: 245,814.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,374.20 : 443,480.16 = 178,132.72 : x
  2. Step 2: Convert to fraction form
    321,374.20/443,480.16 = 178,132.72/x
  3. Step 3: Cross multiply
    321,374.20x = 443,480.16 × 178,132.72
  4. Step 4: Simplify right side
    321,374.20x = 78,998,327,166.84
  5. Step 5: Solve for x
    x = 78,998,327,166.84/321,374.20
  6. Step 6: Final answer
    x = 245,814.15

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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.