Home / 286,145.43-394,789.35-165,270.75

Finding the Fourth Proportional to 286,145.43, 394,789.35 and 165,270.75

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Solution

The fourth proportional to 286,145.43, 394,789.35 and 165,270.75 is: 228,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,145.43 : 394,789.35 = 165,270.75 : x
  2. Step 2: Convert to fraction form
    286,145.43/394,789.35 = 165,270.75/x
  3. Step 3: Cross multiply
    286,145.43x = 394,789.35 × 165,270.75
  4. Step 4: Simplify right side
    286,145.43x = 65,247,131,966.51
  5. Step 5: Solve for x
    x = 65,247,131,966.51/286,145.43
  6. Step 6: Final answer
    x = 228,020.88

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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.