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Finding the Fourth Proportional to 227,611.20, 340,639.20 and 199,617.60

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Solution

The fourth proportional to 227,611.20, 340,639.20 and 199,617.60 is: 298,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,611.20 : 340,639.20 = 199,617.60 : x
  2. Step 2: Convert to fraction form
    227,611.20/340,639.20 = 199,617.60/x
  3. Step 3: Cross multiply
    227,611.20x = 340,639.20 × 199,617.60
  4. Step 4: Simplify right side
    227,611.20x = 67,997,579,569.92
  5. Step 5: Solve for x
    x = 67,997,579,569.92/227,611.20
  6. Step 6: Final answer
    x = 298,744.44

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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.