Home / 276,440.67-381,500.42-155,589.80

Finding the Fourth Proportional to 276,440.67, 381,500.42 and 155,589.80

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Solution

The fourth proportional to 276,440.67, 381,500.42 and 155,589.80 is: 214,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,440.67 : 381,500.42 = 155,589.80 : x
  2. Step 2: Convert to fraction form
    276,440.67/381,500.42 = 155,589.80/x
  3. Step 3: Cross multiply
    276,440.67x = 381,500.42 × 155,589.80
  4. Step 4: Simplify right side
    276,440.67x = 59,357,571,362.26
  5. Step 5: Solve for x
    x = 59,357,571,362.26/276,440.67
  6. Step 6: Final answer
    x = 214,720.83

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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.