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Finding the Fourth Proportional to 329,247.20, 494,101.20 and 211,205.60

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Solution

The fourth proportional to 329,247.20, 494,101.20 and 211,205.60 is: 316,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,247.20 : 494,101.20 = 211,205.60 : x
  2. Step 2: Convert to fraction form
    329,247.20/494,101.20 = 211,205.60/x
  3. Step 3: Cross multiply
    329,247.20x = 494,101.20 × 211,205.60
  4. Step 4: Simplify right side
    329,247.20x = 104,356,940,406.72
  5. Step 5: Solve for x
    x = 104,356,940,406.72/329,247.20
  6. Step 6: Final answer
    x = 316,956.20

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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.