Home / 263,721.89-395,620.54-81,368.15

Finding the Fourth Proportional to 263,721.89, 395,620.54 and 81,368.15

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Solution

The fourth proportional to 263,721.89, 395,620.54 and 81,368.15 is: 122,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,721.89 : 395,620.54 = 81,368.15 : x
  2. Step 2: Convert to fraction form
    263,721.89/395,620.54 = 81,368.15/x
  3. Step 3: Cross multiply
    263,721.89x = 395,620.54 × 81,368.15
  4. Step 4: Simplify right side
    263,721.89x = 32,190,909,260.28
  5. Step 5: Solve for x
    x = 32,190,909,260.28/263,721.89
  6. Step 6: Final answer
    x = 122,063.85

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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.