Home / 280,251.08-420,364.86-130,439.84

Finding the Fourth Proportional to 280,251.08, 420,364.86 and 130,439.84

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Solution

The fourth proportional to 280,251.08, 420,364.86 and 130,439.84 is: 195,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,251.08 : 420,364.86 = 130,439.84 : x
  2. Step 2: Convert to fraction form
    280,251.08/420,364.86 = 130,439.84/x
  3. Step 3: Cross multiply
    280,251.08x = 420,364.86 × 130,439.84
  4. Step 4: Simplify right side
    280,251.08x = 54,832,325,080.02
  5. Step 5: Solve for x
    x = 54,832,325,080.02/280,251.08
  6. Step 6: Final answer
    x = 195,654.29

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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.