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Finding the Fourth Proportional to 372,289.37, 558,591.55 and 203,612.78

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Solution

The fourth proportional to 372,289.37, 558,591.55 and 203,612.78 is: 305,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,289.37 : 558,591.55 = 203,612.78 : x
  2. Step 2: Convert to fraction form
    372,289.37/558,591.55 = 203,612.78/x
  3. Step 3: Cross multiply
    372,289.37x = 558,591.55 × 203,612.78
  4. Step 4: Simplify right side
    372,289.37x = 113,736,375,078.02
  5. Step 5: Solve for x
    x = 113,736,375,078.02/372,289.37
  6. Step 6: Final answer
    x = 305,505.30

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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.