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Finding the Fourth Proportional to 204,420.60, 306,630.90 and 54,660.60

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Solution

The fourth proportional to 204,420.60, 306,630.90 and 54,660.60 is: 81,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,420.60 : 306,630.90 = 54,660.60 : x
  2. Step 2: Convert to fraction form
    204,420.60/306,630.90 = 54,660.60/x
  3. Step 3: Cross multiply
    204,420.60x = 306,630.90 × 54,660.60
  4. Step 4: Simplify right side
    204,420.60x = 16,760,628,972.54
  5. Step 5: Solve for x
    x = 16,760,628,972.54/204,420.60
  6. Step 6: Final answer
    x = 81,990.90

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1.5x scale

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.