Home / 276,811.26-381,997.80-155,991.36

Finding the Fourth Proportional to 276,811.26, 381,997.80 and 155,991.36

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Solution

The fourth proportional to 276,811.26, 381,997.80 and 155,991.36 is: 215,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,811.26 : 381,997.80 = 155,991.36 : x
  2. Step 2: Convert to fraction form
    276,811.26/381,997.80 = 155,991.36/x
  3. Step 3: Cross multiply
    276,811.26x = 381,997.80 × 155,991.36
  4. Step 4: Simplify right side
    276,811.26x = 59,588,356,339.01
  5. Step 5: Solve for x
    x = 59,588,356,339.01/276,811.26
  6. Step 6: Final answer
    x = 215,267.10

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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.