Home / 263,399.10-395,058.54-85,905.82

Finding the Fourth Proportional to 263,399.10, 395,058.54 and 85,905.82

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Solution

The fourth proportional to 263,399.10, 395,058.54 and 85,905.82 is: 128,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,399.10 : 395,058.54 = 85,905.82 : x
  2. Step 2: Convert to fraction form
    263,399.10/395,058.54 = 85,905.82/x
  3. Step 3: Cross multiply
    263,399.10x = 395,058.54 × 85,905.82
  4. Step 4: Simplify right side
    263,399.10x = 33,937,827,826.70
  5. Step 5: Solve for x
    x = 33,937,827,826.70/263,399.10
  6. Step 6: Final answer
    x = 128,845.65

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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.