Home / 211,768.20-317,783.88-131,962.80

Finding the Fourth Proportional to 211,768.20, 317,783.88 and 131,962.80

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Solution

The fourth proportional to 211,768.20, 317,783.88 and 131,962.80 is: 198,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,768.20 : 317,783.88 = 131,962.80 : x
  2. Step 2: Convert to fraction form
    211,768.20/317,783.88 = 131,962.80/x
  3. Step 3: Cross multiply
    211,768.20x = 317,783.88 × 131,962.80
  4. Step 4: Simplify right side
    211,768.20x = 41,935,650,599.66
  5. Step 5: Solve for x
    x = 41,935,650,599.66/211,768.20
  6. Step 6: Final answer
    x = 198,026.19

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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.