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Finding the Fourth Proportional to 260,795.60, 391,047.60 and 120,380.48

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Solution

The fourth proportional to 260,795.60, 391,047.60 and 120,380.48 is: 180,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,795.60 : 391,047.60 = 120,380.48 : x
  2. Step 2: Convert to fraction form
    260,795.60/391,047.60 = 120,380.48/x
  3. Step 3: Cross multiply
    260,795.60x = 391,047.60 × 120,380.48
  4. Step 4: Simplify right side
    260,795.60x = 47,074,497,790.85
  5. Step 5: Solve for x
    x = 47,074,497,790.85/260,795.60
  6. Step 6: Final answer
    x = 180,503.42

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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.