Home / 276,219.45-381,179.04-155,360.67

Finding the Fourth Proportional to 276,219.45, 381,179.04 and 155,360.67

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Solution

The fourth proportional to 276,219.45, 381,179.04 and 155,360.67 is: 214,395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,219.45 : 381,179.04 = 155,360.67 : x
  2. Step 2: Convert to fraction form
    276,219.45/381,179.04 = 155,360.67/x
  3. Step 3: Cross multiply
    276,219.45x = 381,179.04 × 155,360.67
  4. Step 4: Simplify right side
    276,219.45x = 59,220,231,044.36
  5. Step 5: Solve for x
    x = 59,220,231,044.36/276,219.45
  6. Step 6: Final answer
    x = 214,395.59

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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.