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Finding the Fourth Proportional to 263,630.72, 395,445.98 and 105,859.13

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Solution

The fourth proportional to 263,630.72, 395,445.98 and 105,859.13 is: 158,788.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,630.72 : 395,445.98 = 105,859.13 : x
  2. Step 2: Convert to fraction form
    263,630.72/395,445.98 = 105,859.13/x
  3. Step 3: Cross multiply
    263,630.72x = 395,445.98 × 105,859.13
  4. Step 4: Simplify right side
    263,630.72x = 41,861,565,692.22
  5. Step 5: Solve for x
    x = 41,861,565,692.22/263,630.72
  6. Step 6: Final answer
    x = 158,788.65

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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.