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Finding the Fourth Proportional to 230,797.15, 318,498.89 and 128,816.73

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Solution

The fourth proportional to 230,797.15, 318,498.89 and 128,816.73 is: 177,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,797.15 : 318,498.89 = 128,816.73 : x
  2. Step 2: Convert to fraction form
    230,797.15/318,498.89 = 128,816.73/x
  3. Step 3: Cross multiply
    230,797.15x = 318,498.89 × 128,816.73
  4. Step 4: Simplify right side
    230,797.15x = 41,027,984,874.35
  5. Step 5: Solve for x
    x = 41,027,984,874.35/230,797.15
  6. Step 6: Final answer
    x = 177,766.43

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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.