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Finding the Fourth Proportional to 268,761.60, 402,969.60 and 111,052.80

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Solution

The fourth proportional to 268,761.60, 402,969.60 and 111,052.80 is: 166,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,761.60 : 402,969.60 = 111,052.80 : x
  2. Step 2: Convert to fraction form
    268,761.60/402,969.60 = 111,052.80/x
  3. Step 3: Cross multiply
    268,761.60x = 402,969.60 × 111,052.80
  4. Step 4: Simplify right side
    268,761.60x = 44,750,902,394.88
  5. Step 5: Solve for x
    x = 44,750,902,394.88/268,761.60
  6. Step 6: Final answer
    x = 166,507.80

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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.