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Finding the Fourth Proportional to 285,542.79, 394,043.18 and 158,217.27

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Solution

The fourth proportional to 285,542.79, 394,043.18 and 158,217.27 is: 218,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,542.79 : 394,043.18 = 158,217.27 : x
  2. Step 2: Convert to fraction form
    285,542.79/394,043.18 = 158,217.27/x
  3. Step 3: Cross multiply
    285,542.79x = 394,043.18 × 158,217.27
  4. Step 4: Simplify right side
    285,542.79x = 62,344,435,410.63
  5. Step 5: Solve for x
    x = 62,344,435,410.63/285,542.79
  6. Step 6: Final answer
    x = 218,336.58

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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.