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Finding the Fourth Proportional to 367,939.60, 550,597.20 and 255,090.40

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Solution

The fourth proportional to 367,939.60, 550,597.20 and 255,090.40 is: 381,725.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,939.60 : 550,597.20 = 255,090.40 : x
  2. Step 2: Convert to fraction form
    367,939.60/550,597.20 = 255,090.40/x
  3. Step 3: Cross multiply
    367,939.60x = 550,597.20 × 255,090.40
  4. Step 4: Simplify right side
    367,939.60x = 140,452,059,986.88
  5. Step 5: Solve for x
    x = 140,452,059,986.88/367,939.60
  6. Step 6: Final answer
    x = 381,725.86

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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.