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Finding the Fourth Proportional to 321,760.20, 482,797.74 and 129,626.64

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Solution

The fourth proportional to 321,760.20, 482,797.74 and 129,626.64 is: 194,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,760.20 : 482,797.74 = 129,626.64 : x
  2. Step 2: Convert to fraction form
    321,760.20/482,797.74 = 129,626.64/x
  3. Step 3: Cross multiply
    321,760.20x = 482,797.74 × 129,626.64
  4. Step 4: Simplify right side
    321,760.20x = 62,583,448,835.79
  5. Step 5: Solve for x
    x = 62,583,448,835.79/321,760.20
  6. Step 6: Final answer
    x = 194,503.39

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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.