Home / 279,943.92-419,916.21-69,581.86

Finding the Fourth Proportional to 279,943.92, 419,916.21 and 69,581.86

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Solution

The fourth proportional to 279,943.92, 419,916.21 and 69,581.86 is: 104,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,943.92 : 419,916.21 = 69,581.86 : x
  2. Step 2: Convert to fraction form
    279,943.92/419,916.21 = 69,581.86/x
  3. Step 3: Cross multiply
    279,943.92x = 419,916.21 × 69,581.86
  4. Step 4: Simplify right side
    279,943.92x = 29,218,548,488.46
  5. Step 5: Solve for x
    x = 29,218,548,488.46/279,943.92
  6. Step 6: Final answer
    x = 104,372.86

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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.