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Finding the Fourth Proportional to 263,501.46, 395,315.19 and 86,008.82

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Solution

The fourth proportional to 263,501.46, 395,315.19 and 86,008.82 is: 129,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,501.46 : 395,315.19 = 86,008.82 : x
  2. Step 2: Convert to fraction form
    263,501.46/395,315.19 = 86,008.82/x
  3. Step 3: Cross multiply
    263,501.46x = 395,315.19 × 86,008.82
  4. Step 4: Simplify right side
    263,501.46x = 34,000,591,043.40
  5. Step 5: Solve for x
    x = 34,000,591,043.40/263,501.46
  6. Step 6: Final answer
    x = 129,033.79

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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.