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Finding the Fourth Proportional to 263,867.90, 395,850.51 and 86,384.75

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Solution

The fourth proportional to 263,867.90, 395,850.51 and 86,384.75 is: 129,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,867.90 : 395,850.51 = 86,384.75 : x
  2. Step 2: Convert to fraction form
    263,867.90/395,850.51 = 86,384.75/x
  3. Step 3: Cross multiply
    263,867.90x = 395,850.51 × 86,384.75
  4. Step 4: Simplify right side
    263,867.90x = 34,195,445,364.47
  5. Step 5: Solve for x
    x = 34,195,445,364.47/263,867.90
  6. Step 6: Final answer
    x = 129,593.05

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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.