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Finding the Fourth Proportional to 254,487.60, 381,634.20 and 76,935.60

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Solution

The fourth proportional to 254,487.60, 381,634.20 and 76,935.60 is: 115,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,487.60 : 381,634.20 = 76,935.60 : x
  2. Step 2: Convert to fraction form
    254,487.60/381,634.20 = 76,935.60/x
  3. Step 3: Cross multiply
    254,487.60x = 381,634.20 × 76,935.60
  4. Step 4: Simplify right side
    254,487.60x = 29,361,256,157.52
  5. Step 5: Solve for x
    x = 29,361,256,157.52/254,487.60
  6. Step 6: Final answer
    x = 115,374.01

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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.