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Finding the Fourth Proportional to 286,367.85, 395,230.73 and 206,061.21

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Solution

The fourth proportional to 286,367.85, 395,230.73 and 206,061.21 is: 284,395.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,367.85 : 395,230.73 = 206,061.21 : x
  2. Step 2: Convert to fraction form
    286,367.85/395,230.73 = 206,061.21/x
  3. Step 3: Cross multiply
    286,367.85x = 395,230.73 × 206,061.21
  4. Step 4: Simplify right side
    286,367.85x = 81,441,721,422.68
  5. Step 5: Solve for x
    x = 81,441,721,422.68/286,367.85
  6. Step 6: Final answer
    x = 284,395.48

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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.