Home / 276,399.89-414,629.46-76,721.12

Finding the Fourth Proportional to 276,399.89, 414,629.46 and 76,721.12

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Solution

The fourth proportional to 276,399.89, 414,629.46 and 76,721.12 is: 115,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,399.89 : 414,629.46 = 76,721.12 : x
  2. Step 2: Convert to fraction form
    276,399.89/414,629.46 = 76,721.12/x
  3. Step 3: Cross multiply
    276,399.89x = 414,629.46 × 76,721.12
  4. Step 4: Simplify right side
    276,399.89x = 31,810,834,483.05
  5. Step 5: Solve for x
    x = 31,810,834,483.05/276,399.89
  6. Step 6: Final answer
    x = 115,089.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.