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Finding the Fourth Proportional to 355,544.72, 490,660.44 and 194,406.56

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Solution

The fourth proportional to 355,544.72, 490,660.44 and 194,406.56 is: 268,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,544.72 : 490,660.44 = 194,406.56 : x
  2. Step 2: Convert to fraction form
    355,544.72/490,660.44 = 194,406.56/x
  3. Step 3: Cross multiply
    355,544.72x = 490,660.44 × 194,406.56
  4. Step 4: Simplify right side
    355,544.72x = 95,387,608,268.49
  5. Step 5: Solve for x
    x = 95,387,608,268.49/355,544.72
  6. Step 6: Final answer
    x = 268,285.82

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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.