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Finding the Fourth Proportional to 366,861.20, 550,291.80 and 266,477.90

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Solution

The fourth proportional to 366,861.20, 550,291.80 and 266,477.90 is: 399,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,861.20 : 550,291.80 = 266,477.90 : x
  2. Step 2: Convert to fraction form
    366,861.20/550,291.80 = 266,477.90/x
  3. Step 3: Cross multiply
    366,861.20x = 550,291.80 × 266,477.90
  4. Step 4: Simplify right side
    366,861.20x = 146,640,603,251.22
  5. Step 5: Solve for x
    x = 146,640,603,251.22/366,861.20
  6. Step 6: Final answer
    x = 399,716.85

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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.