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Finding the Fourth Proportional to 330,166.40, 495,249.60 and 211,971.20

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Solution

The fourth proportional to 330,166.40, 495,249.60 and 211,971.20 is: 317,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,166.40 : 495,249.60 = 211,971.20 : x
  2. Step 2: Convert to fraction form
    330,166.40/495,249.60 = 211,971.20/x
  3. Step 3: Cross multiply
    330,166.40x = 495,249.60 × 211,971.20
  4. Step 4: Simplify right side
    330,166.40x = 104,978,652,011.52
  5. Step 5: Solve for x
    x = 104,978,652,011.52/330,166.40
  6. Step 6: Final answer
    x = 317,956.80

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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.