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Finding the Fourth Proportional to 366,274.40, 505,485.41 and 221,115.86

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Solution

The fourth proportional to 366,274.40, 505,485.41 and 221,115.86 is: 305,156.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,274.40 : 505,485.41 = 221,115.86 : x
  2. Step 2: Convert to fraction form
    366,274.40/505,485.41 = 221,115.86/x
  3. Step 3: Cross multiply
    366,274.40x = 505,485.41 × 221,115.86
  4. Step 4: Simplify right side
    366,274.40x = 111,770,837,516.60
  5. Step 5: Solve for x
    x = 111,770,837,516.60/366,274.40
  6. Step 6: Final answer
    x = 305,156.02

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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.