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Finding the Fourth Proportional to 355,366.85, 490,405.06 and 194,221.85

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Solution

The fourth proportional to 355,366.85, 490,405.06 and 194,221.85 is: 268,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,366.85 : 490,405.06 = 194,221.85 : x
  2. Step 2: Convert to fraction form
    355,366.85/490,405.06 = 194,221.85/x
  3. Step 3: Cross multiply
    355,366.85x = 490,405.06 × 194,221.85
  4. Step 4: Simplify right side
    355,366.85x = 95,247,375,793.31
  5. Step 5: Solve for x
    x = 95,247,375,793.31/355,366.85
  6. Step 6: Final answer
    x = 268,025.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.