Home / 260,764.20-390,692.70-120,234.60

Finding the Fourth Proportional to 260,764.20, 390,692.70 and 120,234.60

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Solution

The fourth proportional to 260,764.20, 390,692.70 and 120,234.60 is: 180,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,764.20 : 390,692.70 = 120,234.60 : x
  2. Step 2: Convert to fraction form
    260,764.20/390,692.70 = 120,234.60/x
  3. Step 3: Cross multiply
    260,764.20x = 390,692.70 × 120,234.60
  4. Step 4: Simplify right side
    260,764.20x = 46,974,780,507.42
  5. Step 5: Solve for x
    x = 46,974,780,507.42/260,764.20
  6. Step 6: Final answer
    x = 180,142.75

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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.