Home / 213,106.68-319,660.20-55,321.92

Finding the Fourth Proportional to 213,106.68, 319,660.20 and 55,321.92

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Solution

The fourth proportional to 213,106.68, 319,660.20 and 55,321.92 is: 82,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,106.68 : 319,660.20 = 55,321.92 : x
  2. Step 2: Convert to fraction form
    213,106.68/319,660.20 = 55,321.92/x
  3. Step 3: Cross multiply
    213,106.68x = 319,660.20 × 55,321.92
  4. Step 4: Simplify right side
    213,106.68x = 17,684,216,011.58
  5. Step 5: Solve for x
    x = 17,684,216,011.58/213,106.68
  6. Step 6: Final answer
    x = 82,982.93

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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.