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Finding the Fourth Proportional to 366,072.30, 549,198.45 and 126,189.90

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Solution

The fourth proportional to 366,072.30, 549,198.45 and 126,189.90 is: 189,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,072.30 : 549,198.45 = 126,189.90 : x
  2. Step 2: Convert to fraction form
    366,072.30/549,198.45 = 126,189.90/x
  3. Step 3: Cross multiply
    366,072.30x = 549,198.45 × 126,189.90
  4. Step 4: Simplify right side
    366,072.30x = 69,303,297,485.66
  5. Step 5: Solve for x
    x = 69,303,297,485.66/366,072.30
  6. Step 6: Final answer
    x = 189,315.87

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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.