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Finding the Fourth Proportional to 286,215.87, 394,958.10 and 158,881.44

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Solution

The fourth proportional to 286,215.87, 394,958.10 and 158,881.44 is: 219,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,215.87 : 394,958.10 = 158,881.44 : x
  2. Step 2: Convert to fraction form
    286,215.87/394,958.10 = 158,881.44/x
  3. Step 3: Cross multiply
    286,215.87x = 394,958.10 × 158,881.44
  4. Step 4: Simplify right side
    286,215.87x = 62,751,511,667.66
  5. Step 5: Solve for x
    x = 62,751,511,667.66/286,215.87
  6. Step 6: Final answer
    x = 219,245.40

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1.5x scale

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.