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Finding the Fourth Proportional to 321,081.22, 481,639.11 and 133,904.26

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Solution

The fourth proportional to 321,081.22, 481,639.11 and 133,904.26 is: 200,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,081.22 : 481,639.11 = 133,904.26 : x
  2. Step 2: Convert to fraction form
    321,081.22/481,639.11 = 133,904.26/x
  3. Step 3: Cross multiply
    321,081.22x = 481,639.11 × 133,904.26
  4. Step 4: Simplify right side
    321,081.22x = 64,493,528,611.61
  5. Step 5: Solve for x
    x = 64,493,528,611.61/321,081.22
  6. Step 6: Final answer
    x = 200,863.60

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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.