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Finding the Fourth Proportional to 330,167.40, 495,251.10 and 211,972.20

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Solution

The fourth proportional to 330,167.40, 495,251.10 and 211,972.20 is: 317,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,167.40 : 495,251.10 = 211,972.20 : x
  2. Step 2: Convert to fraction form
    330,167.40/495,251.10 = 211,972.20/x
  3. Step 3: Cross multiply
    330,167.40x = 495,251.10 × 211,972.20
  4. Step 4: Simplify right side
    330,167.40x = 104,979,465,219.42
  5. Step 5: Solve for x
    x = 104,979,465,219.42/330,167.40
  6. Step 6: Final answer
    x = 317,958.30

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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.