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Finding the Fourth Proportional to 263,444.52, 395,205.24 and 85,907.90

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Solution

The fourth proportional to 263,444.52, 395,205.24 and 85,907.90 is: 128,874.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,444.52 : 395,205.24 = 85,907.90 : x
  2. Step 2: Convert to fraction form
    263,444.52/395,205.24 = 85,907.90/x
  3. Step 3: Cross multiply
    263,444.52x = 395,205.24 × 85,907.90
  4. Step 4: Simplify right side
    263,444.52x = 33,951,252,237.40
  5. Step 5: Solve for x
    x = 33,951,252,237.40/263,444.52
  6. Step 6: Final answer
    x = 128,874.39

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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.