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Finding the Fourth Proportional to 355,357.92, 490,379.13 and 194,218.56

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Solution

The fourth proportional to 355,357.92, 490,379.13 and 194,218.56 is: 268,013.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,357.92 : 490,379.13 = 194,218.56 : x
  2. Step 2: Convert to fraction form
    355,357.92/490,379.13 = 194,218.56/x
  3. Step 3: Cross multiply
    355,357.92x = 490,379.13 × 194,218.56
  4. Step 4: Simplify right side
    355,357.92x = 95,240,728,482.65
  5. Step 5: Solve for x
    x = 95,240,728,482.65/355,357.92
  6. Step 6: Final answer
    x = 268,013.52

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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.