Home / 276,310.91-381,281.92-155,449.60

Finding the Fourth Proportional to 276,310.91, 381,281.92 and 155,449.60

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Solution

The fourth proportional to 276,310.91, 381,281.92 and 155,449.60 is: 214,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,310.91 : 381,281.92 = 155,449.60 : x
  2. Step 2: Convert to fraction form
    276,310.91/381,281.92 = 155,449.60/x
  3. Step 3: Cross multiply
    276,310.91x = 381,281.92 × 155,449.60
  4. Step 4: Simplify right side
    276,310.91x = 59,270,120,609.40
  5. Step 5: Solve for x
    x = 59,270,120,609.40/276,310.91
  6. Step 6: Final answer
    x = 214,505.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.