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Finding the Fourth Proportional to 227,978.40, 341,449.20 and 143,997.60

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Solution

The fourth proportional to 227,978.40, 341,449.20 and 143,997.60 is: 215,668.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,978.40 : 341,449.20 = 143,997.60 : x
  2. Step 2: Convert to fraction form
    227,978.40/341,449.20 = 143,997.60/x
  3. Step 3: Cross multiply
    227,978.40x = 341,449.20 × 143,997.60
  4. Step 4: Simplify right side
    227,978.40x = 49,167,865,321.92
  5. Step 5: Solve for x
    x = 49,167,865,321.92/227,978.40
  6. Step 6: Final answer
    x = 215,668.96

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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.