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Finding the Fourth Proportional to 263,476.65, 395,225.91 and 76,488.15

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Solution

The fourth proportional to 263,476.65, 395,225.91 and 76,488.15 is: 114,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,476.65 : 395,225.91 = 76,488.15 : x
  2. Step 2: Convert to fraction form
    263,476.65/395,225.91 = 76,488.15/x
  3. Step 3: Cross multiply
    263,476.65x = 395,225.91 × 76,488.15
  4. Step 4: Simplify right side
    263,476.65x = 30,230,098,687.97
  5. Step 5: Solve for x
    x = 30,230,098,687.97/263,476.65
  6. Step 6: Final answer
    x = 114,735.40

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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.