Home / 321,021.64-442,789.86-220,244.68

Finding the Fourth Proportional to 321,021.64, 442,789.86 and 220,244.68

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Solution

The fourth proportional to 321,021.64, 442,789.86 and 220,244.68 is: 303,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,021.64 : 442,789.86 = 220,244.68 : x
  2. Step 2: Convert to fraction form
    321,021.64/442,789.86 = 220,244.68/x
  3. Step 3: Cross multiply
    321,021.64x = 442,789.86 × 220,244.68
  4. Step 4: Simplify right side
    321,021.64x = 97,522,111,022.94
  5. Step 5: Solve for x
    x = 97,522,111,022.94/321,021.64
  6. Step 6: Final answer
    x = 303,786.72

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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.