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Finding the Fourth Proportional to 263,470.52, 395,268.66 and 85,977.86

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Solution

The fourth proportional to 263,470.52, 395,268.66 and 85,977.86 is: 128,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,470.52 : 395,268.66 = 85,977.86 : x
  2. Step 2: Convert to fraction form
    263,470.52/395,268.66 = 85,977.86/x
  3. Step 3: Cross multiply
    263,470.52x = 395,268.66 × 85,977.86
  4. Step 4: Simplify right side
    263,470.52x = 33,984,351,535.52
  5. Step 5: Solve for x
    x = 33,984,351,535.52/263,470.52
  6. Step 6: Final answer
    x = 128,987.30

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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.