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Finding the Fourth Proportional to 321,155.80, 443,222.22 and 177,960.76

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Solution

The fourth proportional to 321,155.80, 443,222.22 and 177,960.76 is: 245,600.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,155.80 : 443,222.22 = 177,960.76 : x
  2. Step 2: Convert to fraction form
    321,155.80/443,222.22 = 177,960.76/x
  3. Step 3: Cross multiply
    321,155.80x = 443,222.22 × 177,960.76
  4. Step 4: Simplify right side
    321,155.80x = 78,876,163,120.09
  5. Step 5: Solve for x
    x = 78,876,163,120.09/321,155.80
  6. Step 6: Final answer
    x = 245,600.93

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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.