Home / 280,027.44-420,040.32-69,665.36

Finding the Fourth Proportional to 280,027.44, 420,040.32 and 69,665.36

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Solution

The fourth proportional to 280,027.44, 420,040.32 and 69,665.36 is: 104,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,027.44 : 420,040.32 = 69,665.36 : x
  2. Step 2: Convert to fraction form
    280,027.44/420,040.32 = 69,665.36/x
  3. Step 3: Cross multiply
    280,027.44x = 420,040.32 × 69,665.36
  4. Step 4: Simplify right side
    280,027.44x = 29,262,260,107.32
  5. Step 5: Solve for x
    x = 29,262,260,107.32/280,027.44
  6. Step 6: Final answer
    x = 104,497.83

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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.