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Finding the Fourth Proportional to 285,544.80, 394,059.60 and 158,234.40

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Solution

The fourth proportional to 285,544.80, 394,059.60 and 158,234.40 is: 218,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,544.80 : 394,059.60 = 158,234.40 : x
  2. Step 2: Convert to fraction form
    285,544.80/394,059.60 = 158,234.40/x
  3. Step 3: Cross multiply
    285,544.80x = 394,059.60 × 158,234.40
  4. Step 4: Simplify right side
    285,544.80x = 62,353,784,370.24
  5. Step 5: Solve for x
    x = 62,353,784,370.24/285,544.80
  6. Step 6: Final answer
    x = 218,367.78

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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.