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Finding the Fourth Proportional to 386,772.60, 580,158.90 and 281,796.60

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Solution

The fourth proportional to 386,772.60, 580,158.90 and 281,796.60 is: 422,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,772.60 : 580,158.90 = 281,796.60 : x
  2. Step 2: Convert to fraction form
    386,772.60/580,158.90 = 281,796.60/x
  3. Step 3: Cross multiply
    386,772.60x = 580,158.90 × 281,796.60
  4. Step 4: Simplify right side
    386,772.60x = 163,486,805,479.74
  5. Step 5: Solve for x
    x = 163,486,805,479.74/386,772.60
  6. Step 6: Final answer
    x = 422,694.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.