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Finding the Fourth Proportional to 245,147.85, 366,930.80 and 126,656.19

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Solution

The fourth proportional to 245,147.85, 366,930.80 and 126,656.19 is: 189,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,147.85 : 366,930.80 = 126,656.19 : x
  2. Step 2: Convert to fraction form
    245,147.85/366,930.80 = 126,656.19/x
  3. Step 3: Cross multiply
    245,147.85x = 366,930.80 × 126,656.19
  4. Step 4: Simplify right side
    245,147.85x = 46,474,057,121.65
  5. Step 5: Solve for x
    x = 46,474,057,121.65/245,147.85
  6. Step 6: Final answer
    x = 189,575.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.