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Finding the Fourth Proportional to 263,474.65, 395,222.91 and 76,486.15

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Solution

The fourth proportional to 263,474.65, 395,222.91 and 76,486.15 is: 114,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,474.65 : 395,222.91 = 76,486.15 : x
  2. Step 2: Convert to fraction form
    263,474.65/395,222.91 = 76,486.15/x
  3. Step 3: Cross multiply
    263,474.65x = 395,222.91 × 76,486.15
  4. Step 4: Simplify right side
    263,474.65x = 30,229,077,980.90
  5. Step 5: Solve for x
    x = 30,229,077,980.90/263,474.65
  6. Step 6: Final answer
    x = 114,732.40

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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.