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Finding the Fourth Proportional to 366,619.12, 505,966.98 and 213,649

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Solution

The fourth proportional to 366,619.12, 505,966.98 and 213,649 is: 294,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,619.12 : 505,966.98 = 213,649 : x
  2. Step 2: Convert to fraction form
    366,619.12/505,966.98 = 213,649/x
  3. Step 3: Cross multiply
    366,619.12x = 505,966.98 × 213,649
  4. Step 4: Simplify right side
    366,619.12x = 108,099,339,310.02
  5. Step 5: Solve for x
    x = 108,099,339,310.02/366,619.12
  6. Step 6: Final answer
    x = 294,854.61

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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.