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Finding the Fourth Proportional to 386,080.60, 578,850.90 and 228,227.80

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Solution

The fourth proportional to 386,080.60, 578,850.90 and 228,227.80 is: 342,182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,080.60 : 578,850.90 = 228,227.80 : x
  2. Step 2: Convert to fraction form
    386,080.60/578,850.90 = 228,227.80/x
  3. Step 3: Cross multiply
    386,080.60x = 578,850.90 × 228,227.80
  4. Step 4: Simplify right side
    386,080.60x = 132,109,867,435.02
  5. Step 5: Solve for x
    x = 132,109,867,435.02/386,080.60
  6. Step 6: Final answer
    x = 342,182.09

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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.