Home / 280,656.20-420,690.24-130,772.92

Finding the Fourth Proportional to 280,656.20, 420,690.24 and 130,772.92

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Solution

The fourth proportional to 280,656.20, 420,690.24 and 130,772.92 is: 196,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,656.20 : 420,690.24 = 130,772.92 : x
  2. Step 2: Convert to fraction form
    280,656.20/420,690.24 = 130,772.92/x
  3. Step 3: Cross multiply
    280,656.20x = 420,690.24 × 130,772.92
  4. Step 4: Simplify right side
    280,656.20x = 55,014,891,100.30
  5. Step 5: Solve for x
    x = 55,014,891,100.30/280,656.20
  6. Step 6: Final answer
    x = 196,022.36

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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.