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Finding the Fourth Proportional to 260,754.76, 391,086.78 and 120,501.64

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Solution

The fourth proportional to 260,754.76, 391,086.78 and 120,501.64 is: 180,731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,754.76 : 391,086.78 = 120,501.64 : x
  2. Step 2: Convert to fraction form
    260,754.76/391,086.78 = 120,501.64/x
  3. Step 3: Cross multiply
    260,754.76x = 391,086.78 × 120,501.64
  4. Step 4: Simplify right side
    260,754.76x = 47,126,598,372.32
  5. Step 5: Solve for x
    x = 47,126,598,372.32/260,754.76
  6. Step 6: Final answer
    x = 180,731.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.