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Finding the Fourth Proportional to 395,435.52, 545,695.92 and 225,672.48

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Solution

The fourth proportional to 395,435.52, 545,695.92 and 225,672.48 is: 311,425.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,435.52 : 545,695.92 = 225,672.48 : x
  2. Step 2: Convert to fraction form
    395,435.52/545,695.92 = 225,672.48/x
  3. Step 3: Cross multiply
    395,435.52x = 545,695.92 × 225,672.48
  4. Step 4: Simplify right side
    395,435.52x = 123,148,551,592.28
  5. Step 5: Solve for x
    x = 123,148,551,592.28/395,435.52
  6. Step 6: Final answer
    x = 311,425.11

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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.