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Finding the Fourth Proportional to 355,366.98, 490,405.29 and 194,221.98

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Solution

The fourth proportional to 355,366.98, 490,405.29 and 194,221.98 is: 268,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,366.98 : 490,405.29 = 194,221.98 : x
  2. Step 2: Convert to fraction form
    355,366.98/490,405.29 = 194,221.98/x
  3. Step 3: Cross multiply
    355,366.98x = 490,405.29 × 194,221.98
  4. Step 4: Simplify right side
    355,366.98x = 95,247,486,426.27
  5. Step 5: Solve for x
    x = 95,247,486,426.27/355,366.98
  6. Step 6: Final answer
    x = 268,025.71

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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.