Home / 280,193.26-420,244.78-80,468.22

Finding the Fourth Proportional to 280,193.26, 420,244.78 and 80,468.22

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Solution

The fourth proportional to 280,193.26, 420,244.78 and 80,468.22 is: 120,689.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,193.26 : 420,244.78 = 80,468.22 : x
  2. Step 2: Convert to fraction form
    280,193.26/420,244.78 = 80,468.22/x
  3. Step 3: Cross multiply
    280,193.26x = 420,244.78 × 80,468.22
  4. Step 4: Simplify right side
    280,193.26x = 33,816,349,410.89
  5. Step 5: Solve for x
    x = 33,816,349,410.89/280,193.26
  6. Step 6: Final answer
    x = 120,689.37

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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.