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Finding the Fourth Proportional to 276,353.70, 381,375.56 and 155,499.28

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Solution

The fourth proportional to 276,353.70, 381,375.56 and 155,499.28 is: 214,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,353.70 : 381,375.56 = 155,499.28 : x
  2. Step 2: Convert to fraction form
    276,353.70/381,375.56 = 155,499.28/x
  3. Step 3: Cross multiply
    276,353.70x = 381,375.56 × 155,499.28
  4. Step 4: Simplify right side
    276,353.70x = 59,303,624,989.60
  5. Step 5: Solve for x
    x = 59,303,624,989.60/276,353.70
  6. Step 6: Final answer
    x = 214,593.20

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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.