Home / 330,191.40-495,287.10-211,996.20

Finding the Fourth Proportional to 330,191.40, 495,287.10 and 211,996.20

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Solution

The fourth proportional to 330,191.40, 495,287.10 and 211,996.20 is: 317,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,191.40 : 495,287.10 = 211,996.20 : x
  2. Step 2: Convert to fraction form
    330,191.40/495,287.10 = 211,996.20/x
  3. Step 3: Cross multiply
    330,191.40x = 495,287.10 × 211,996.20
  4. Step 4: Simplify right side
    330,191.40x = 104,998,983,109.02
  5. Step 5: Solve for x
    x = 104,998,983,109.02/330,191.40
  6. Step 6: Final answer
    x = 317,994.30

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Similar ratio
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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.