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Finding the Fourth Proportional to 253,769.45, 380,654.16 and 76,276.62

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Solution

The fourth proportional to 253,769.45, 380,654.16 and 76,276.62 is: 114,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,769.45 : 380,654.16 = 76,276.62 : x
  2. Step 2: Convert to fraction form
    253,769.45/380,654.16 = 76,276.62/x
  3. Step 3: Cross multiply
    253,769.45x = 380,654.16 × 76,276.62
  4. Step 4: Simplify right side
    253,769.45x = 29,035,012,713.74
  5. Step 5: Solve for x
    x = 29,035,012,713.74/253,769.45
  6. Step 6: Final answer
    x = 114,414.93

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Similar ratio
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1.5x scale

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.