Home / 203,439.20-305,158.80-140,453.60

Finding the Fourth Proportional to 203,439.20, 305,158.80 and 140,453.60

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Solution

The fourth proportional to 203,439.20, 305,158.80 and 140,453.60 is: 210,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,439.20 : 305,158.80 = 140,453.60 : x
  2. Step 2: Convert to fraction form
    203,439.20/305,158.80 = 140,453.60/x
  3. Step 3: Cross multiply
    203,439.20x = 305,158.80 × 140,453.60
  4. Step 4: Simplify right side
    203,439.20x = 42,860,652,031.68
  5. Step 5: Solve for x
    x = 42,860,652,031.68/203,439.20
  6. Step 6: Final answer
    x = 210,680.40

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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.