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Finding the Fourth Proportional to 395,180.64, 545,298.48 and 225,404.64

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Solution

The fourth proportional to 395,180.64, 545,298.48 and 225,404.64 is: 311,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,180.64 : 545,298.48 = 225,404.64 : x
  2. Step 2: Convert to fraction form
    395,180.64/545,298.48 = 225,404.64/x
  3. Step 3: Cross multiply
    395,180.64x = 545,298.48 × 225,404.64
  4. Step 4: Simplify right side
    395,180.64x = 122,912,807,576.95
  5. Step 5: Solve for x
    x = 122,912,807,576.95/395,180.64
  6. Step 6: Final answer
    x = 311,029.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.