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Finding the Fourth Proportional to 285,847.75, 394,470.46 and 156,787.27

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Solution

The fourth proportional to 285,847.75, 394,470.46 and 156,787.27 is: 216,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,847.75 : 394,470.46 = 156,787.27 : x
  2. Step 2: Convert to fraction form
    285,847.75/394,470.46 = 156,787.27/x
  3. Step 3: Cross multiply
    285,847.75x = 394,470.46 × 156,787.27
  4. Step 4: Simplify right side
    285,847.75x = 61,847,946,519.04
  5. Step 5: Solve for x
    x = 61,847,946,519.04/285,847.75
  6. Step 6: Final answer
    x = 216,366.74

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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.