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Finding the Fourth Proportional to 321,122.58, 443,143.62 and 177,879.62

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Solution

The fourth proportional to 321,122.58, 443,143.62 and 177,879.62 is: 245,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,122.58 : 443,143.62 = 177,879.62 : x
  2. Step 2: Convert to fraction form
    321,122.58/443,143.62 = 177,879.62/x
  3. Step 3: Cross multiply
    321,122.58x = 443,143.62 × 177,879.62
  4. Step 4: Simplify right side
    321,122.58x = 78,826,218,731.02
  5. Step 5: Solve for x
    x = 78,826,218,731.02/321,122.58
  6. Step 6: Final answer
    x = 245,470.81

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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.