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Finding the Fourth Proportional to 321,410.75, 482,120.24 and 221,544.14

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Solution

The fourth proportional to 321,410.75, 482,120.24 and 221,544.14 is: 332,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,410.75 : 482,120.24 = 221,544.14 : x
  2. Step 2: Convert to fraction form
    321,410.75/482,120.24 = 221,544.14/x
  3. Step 3: Cross multiply
    321,410.75x = 482,120.24 × 221,544.14
  4. Step 4: Simplify right side
    321,410.75x = 106,810,910,429.07
  5. Step 5: Solve for x
    x = 106,810,910,429.07/321,410.75
  6. Step 6: Final answer
    x = 332,319.04

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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.