Home / 276,289.86-381,280.59-163,119.90

Finding the Fourth Proportional to 276,289.86, 381,280.59 and 163,119.90

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Solution

The fourth proportional to 276,289.86, 381,280.59 and 163,119.90 is: 225,105.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,289.86 : 381,280.59 = 163,119.90 : x
  2. Step 2: Convert to fraction form
    276,289.86/381,280.59 = 163,119.90/x
  3. Step 3: Cross multiply
    276,289.86x = 381,280.59 × 163,119.90
  4. Step 4: Simplify right side
    276,289.86x = 62,194,451,712.74
  5. Step 5: Solve for x
    x = 62,194,451,712.74/276,289.86
  6. Step 6: Final answer
    x = 225,105.81

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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.