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Finding the Fourth Proportional to 321,428.28, 482,222.67 and 226,843.08

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Solution

The fourth proportional to 321,428.28, 482,222.67 and 226,843.08 is: 340,321.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,428.28 : 482,222.67 = 226,843.08 : x
  2. Step 2: Convert to fraction form
    321,428.28/482,222.67 = 226,843.08/x
  3. Step 3: Cross multiply
    321,428.28x = 482,222.67 × 226,843.08
  4. Step 4: Simplify right side
    321,428.28x = 109,388,875,708.62
  5. Step 5: Solve for x
    x = 109,388,875,708.62/321,428.28
  6. Step 6: Final answer
    x = 340,321.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.