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Finding the Fourth Proportional to 285,920.28, 394,563.96 and 158,594.76

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Solution

The fourth proportional to 285,920.28, 394,563.96 and 158,594.76 is: 218,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,920.28 : 394,563.96 = 158,594.76 : x
  2. Step 2: Convert to fraction form
    285,920.28/394,563.96 = 158,594.76/x
  3. Step 3: Cross multiply
    285,920.28x = 394,563.96 × 158,594.76
  4. Step 4: Simplify right side
    285,920.28x = 62,575,776,540.85
  5. Step 5: Solve for x
    x = 62,575,776,540.85/285,920.28
  6. Step 6: Final answer
    x = 218,857.43

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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.