Home / 208,838.20-313,257.30-120,364.60

Finding the Fourth Proportional to 208,838.20, 313,257.30 and 120,364.60

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Solution

The fourth proportional to 208,838.20, 313,257.30 and 120,364.60 is: 180,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,838.20 : 313,257.30 = 120,364.60 : x
  2. Step 2: Convert to fraction form
    208,838.20/313,257.30 = 120,364.60/x
  3. Step 3: Cross multiply
    208,838.20x = 313,257.30 × 120,364.60
  4. Step 4: Simplify right side
    208,838.20x = 37,705,089,611.58
  5. Step 5: Solve for x
    x = 37,705,089,611.58/208,838.20
  6. Step 6: Final answer
    x = 180,546.90

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1.5x scale

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.