Home / 211,780.24-317,801.92-131,974.80

Finding the Fourth Proportional to 211,780.24, 317,801.92 and 131,974.80

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Solution

The fourth proportional to 211,780.24, 317,801.92 and 131,974.80 is: 198,044.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,780.24 : 317,801.92 = 131,974.80 : x
  2. Step 2: Convert to fraction form
    211,780.24/317,801.92 = 131,974.80/x
  3. Step 3: Cross multiply
    211,780.24x = 317,801.92 × 131,974.80
  4. Step 4: Simplify right side
    211,780.24x = 41,941,844,831.62
  5. Step 5: Solve for x
    x = 41,941,844,831.62/211,780.24
  6. Step 6: Final answer
    x = 198,044.18

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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.