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Finding the Fourth Proportional to 254,407.60, 381,611.40 and 76,896.10

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Solution

The fourth proportional to 254,407.60, 381,611.40 and 76,896.10 is: 115,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,407.60 : 381,611.40 = 76,896.10 : x
  2. Step 2: Convert to fraction form
    254,407.60/381,611.40 = 76,896.10/x
  3. Step 3: Cross multiply
    254,407.60x = 381,611.40 × 76,896.10
  4. Step 4: Simplify right side
    254,407.60x = 29,344,428,375.54
  5. Step 5: Solve for x
    x = 29,344,428,375.54/254,407.60
  6. Step 6: Final answer
    x = 115,344.15

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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.