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Finding the Fourth Proportional to 254,761.60, 382,142.40 and 161,372.80

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Solution

The fourth proportional to 254,761.60, 382,142.40 and 161,372.80 is: 242,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,761.60 : 382,142.40 = 161,372.80 : x
  2. Step 2: Convert to fraction form
    254,761.60/382,142.40 = 161,372.80/x
  3. Step 3: Cross multiply
    254,761.60x = 382,142.40 × 161,372.80
  4. Step 4: Simplify right side
    254,761.60x = 61,667,389,086.72
  5. Step 5: Solve for x
    x = 61,667,389,086.72/254,761.60
  6. Step 6: Final answer
    x = 242,059.20

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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.