Home / 286,228.60-394,723.46-208,633.72

Finding the Fourth Proportional to 286,228.60, 394,723.46 and 208,633.72

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Solution

The fourth proportional to 286,228.60, 394,723.46 and 208,633.72 is: 287,716.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,228.60 : 394,723.46 = 208,633.72 : x
  2. Step 2: Convert to fraction form
    286,228.60/394,723.46 = 208,633.72/x
  3. Step 3: Cross multiply
    286,228.60x = 394,723.46 × 208,633.72
  4. Step 4: Simplify right side
    286,228.60x = 82,352,623,831.07
  5. Step 5: Solve for x
    x = 82,352,623,831.07/286,228.60
  6. Step 6: Final answer
    x = 287,716.27

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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.