Home / 278,872.35-418,016.11-136,521.33

Finding the Fourth Proportional to 278,872.35, 418,016.11 and 136,521.33

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Solution

The fourth proportional to 278,872.35, 418,016.11 and 136,521.33 is: 204,638.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,872.35 : 418,016.11 = 136,521.33 : x
  2. Step 2: Convert to fraction form
    278,872.35/418,016.11 = 136,521.33/x
  3. Step 3: Cross multiply
    278,872.35x = 418,016.11 × 136,521.33
  4. Step 4: Simplify right side
    278,872.35x = 57,068,115,298.63
  5. Step 5: Solve for x
    x = 57,068,115,298.63/278,872.35
  6. Step 6: Final answer
    x = 204,638.84

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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.