Home / 263,721.20-395,387.40-113,838.80

Finding the Fourth Proportional to 263,721.20, 395,387.40 and 113,838.80

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Solution

The fourth proportional to 263,721.20, 395,387.40 and 113,838.80 is: 170,674.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,721.20 : 395,387.40 = 113,838.80 : x
  2. Step 2: Convert to fraction form
    263,721.20/395,387.40 = 113,838.80/x
  3. Step 3: Cross multiply
    263,721.20x = 395,387.40 × 113,838.80
  4. Step 4: Simplify right side
    263,721.20x = 45,010,427,151.12
  5. Step 5: Solve for x
    x = 45,010,427,151.12/263,721.20
  6. Step 6: Final answer
    x = 170,674.28

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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.