Home / 639,834.22-959,429.22-213,218.92

Finding the Fourth Proportional to 639,834.22, 959,429.22 and 213,218.92

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Solution

The fourth proportional to 639,834.22, 959,429.22 and 213,218.92 is: 319,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,834.22 : 959,429.22 = 213,218.92 : x
  2. Step 2: Convert to fraction form
    639,834.22/959,429.22 = 213,218.92/x
  3. Step 3: Cross multiply
    639,834.22x = 959,429.22 × 213,218.92
  4. Step 4: Simplify right side
    639,834.22x = 204,568,462,104.84
  5. Step 5: Solve for x
    x = 204,568,462,104.84/639,834.22
  6. Step 6: Final answer
    x = 319,721.04

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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.