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Finding the Fourth Proportional to 263,630.13, 395,512.62 and 76,641.63

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Solution

The fourth proportional to 263,630.13, 395,512.62 and 76,641.63 is: 114,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,630.13 : 395,512.62 = 76,641.63 : x
  2. Step 2: Convert to fraction form
    263,630.13/395,512.62 = 76,641.63/x
  3. Step 3: Cross multiply
    263,630.13x = 395,512.62 × 76,641.63
  4. Step 4: Simplify right side
    263,630.13x = 30,312,729,904.81
  5. Step 5: Solve for x
    x = 30,312,729,904.81/263,630.13
  6. Step 6: Final answer
    x = 114,982.04

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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.