Home / 280,449.20-420,046.43-130,464.74

Finding the Fourth Proportional to 280,449.20, 420,046.43 and 130,464.74

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Solution

The fourth proportional to 280,449.20, 420,046.43 and 130,464.74 is: 195,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,449.20 : 420,046.43 = 130,464.74 : x
  2. Step 2: Convert to fraction form
    280,449.20/420,046.43 = 130,464.74/x
  3. Step 3: Cross multiply
    280,449.20x = 420,046.43 × 130,464.74
  4. Step 4: Simplify right side
    280,449.20x = 54,801,248,675.67
  5. Step 5: Solve for x
    x = 54,801,248,675.67/280,449.20
  6. Step 6: Final answer
    x = 195,405.26

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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.