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Finding the Fourth Proportional to 321,323.12, 443,324.60 and 185,338.84

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Solution

The fourth proportional to 321,323.12, 443,324.60 and 185,338.84 is: 255,709.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,323.12 : 443,324.60 = 185,338.84 : x
  2. Step 2: Convert to fraction form
    321,323.12/443,324.60 = 185,338.84/x
  3. Step 3: Cross multiply
    321,323.12x = 443,324.60 × 185,338.84
  4. Step 4: Simplify right side
    321,323.12x = 82,165,267,107.46
  5. Step 5: Solve for x
    x = 82,165,267,107.46/321,323.12
  6. Step 6: Final answer
    x = 255,709.17

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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.