Home / 279,941.76-419,826.51-80,208.63

Finding the Fourth Proportional to 279,941.76, 419,826.51 and 80,208.63

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Solution

The fourth proportional to 279,941.76, 419,826.51 and 80,208.63 is: 120,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,941.76 : 419,826.51 = 80,208.63 : x
  2. Step 2: Convert to fraction form
    279,941.76/419,826.51 = 80,208.63/x
  3. Step 3: Cross multiply
    279,941.76x = 419,826.51 × 80,208.63
  4. Step 4: Simplify right side
    279,941.76x = 33,673,709,204.78
  5. Step 5: Solve for x
    x = 33,673,709,204.78/279,941.76
  6. Step 6: Final answer
    x = 120,288.27

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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.