Home / 211,668.20-317,591.15-131,772.98

Finding the Fourth Proportional to 211,668.20, 317,591.15 and 131,772.98

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Solution

The fourth proportional to 211,668.20, 317,591.15 and 131,772.98 is: 197,714.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,668.20 : 317,591.15 = 131,772.98 : x
  2. Step 2: Convert to fraction form
    211,668.20/317,591.15 = 131,772.98/x
  3. Step 3: Cross multiply
    211,668.20x = 317,591.15 × 131,772.98
  4. Step 4: Simplify right side
    211,668.20x = 41,849,932,257.13
  5. Step 5: Solve for x
    x = 41,849,932,257.13/211,668.20
  6. Step 6: Final answer
    x = 197,714.78

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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.