Home / 280,584.46-420,885.66-109,799.41

Finding the Fourth Proportional to 280,584.46, 420,885.66 and 109,799.41

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Solution

The fourth proportional to 280,584.46, 420,885.66 and 109,799.41 is: 164,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,584.46 : 420,885.66 = 109,799.41 : x
  2. Step 2: Convert to fraction form
    280,584.46/420,885.66 = 109,799.41/x
  3. Step 3: Cross multiply
    280,584.46x = 420,885.66 × 109,799.41
  4. Step 4: Simplify right side
    280,584.46x = 46,212,998,083.32
  5. Step 5: Solve for x
    x = 46,212,998,083.32/280,584.46
  6. Step 6: Final answer
    x = 164,702.63

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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.