Home / 280,278.20-419,955.60-161,742.80

Finding the Fourth Proportional to 280,278.20, 419,955.60 and 161,742.80

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Solution

The fourth proportional to 280,278.20, 419,955.60 and 161,742.80 is: 242,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,278.20 : 419,955.60 = 161,742.80 : x
  2. Step 2: Convert to fraction form
    280,278.20/419,955.60 = 161,742.80/x
  3. Step 3: Cross multiply
    280,278.20x = 419,955.60 × 161,742.80
  4. Step 4: Simplify right side
    280,278.20x = 67,924,794,619.68
  5. Step 5: Solve for x
    x = 67,924,794,619.68/280,278.20
  6. Step 6: Final answer
    x = 242,347.76

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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.