Home / 211,666.20-317,588.15-131,770.98

Finding the Fourth Proportional to 211,666.20, 317,588.15 and 131,770.98

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Solution

The fourth proportional to 211,666.20, 317,588.15 and 131,770.98 is: 197,711.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,666.20 : 317,588.15 = 131,770.98 : x
  2. Step 2: Convert to fraction form
    211,666.20/317,588.15 = 131,770.98/x
  3. Step 3: Cross multiply
    211,666.20x = 317,588.15 × 131,770.98
  4. Step 4: Simplify right side
    211,666.20x = 41,848,901,103.03
  5. Step 5: Solve for x
    x = 41,848,901,103.03/211,666.20
  6. Step 6: Final answer
    x = 197,711.78

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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.