Home / 288,326.83-394,433.14-287,112.42

Finding the Fourth Proportional to 288,326.83, 394,433.14 and 287,112.42

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Solution

The fourth proportional to 288,326.83, 394,433.14 and 287,112.42 is: 392,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,326.83 : 394,433.14 = 287,112.42 : x
  2. Step 2: Convert to fraction form
    288,326.83/394,433.14 = 287,112.42/x
  3. Step 3: Cross multiply
    288,326.83x = 394,433.14 × 287,112.42
  4. Step 4: Simplify right side
    288,326.83x = 113,246,653,836.62
  5. Step 5: Solve for x
    x = 113,246,653,836.62/288,326.83
  6. Step 6: Final answer
    x = 392,771.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.