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Finding the Fourth Proportional to 355,381.68, 490,392.96 and 194,226.54

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Solution

The fourth proportional to 355,381.68, 490,392.96 and 194,226.54 is: 268,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,381.68 : 490,392.96 = 194,226.54 : x
  2. Step 2: Convert to fraction form
    355,381.68/490,392.96 = 194,226.54/x
  3. Step 3: Cross multiply
    355,381.68x = 490,392.96 × 194,226.54
  4. Step 4: Simplify right side
    355,381.68x = 95,247,327,861.16
  5. Step 5: Solve for x
    x = 95,247,327,861.16/355,381.68
  6. Step 6: Final answer
    x = 268,014.18

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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.