Home / 279,236.12-420,717.29-252,611.79

Finding the Fourth Proportional to 279,236.12, 420,717.29 and 252,611.79

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Solution

The fourth proportional to 279,236.12, 420,717.29 and 252,611.79 is: 380,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,236.12 : 420,717.29 = 252,611.79 : x
  2. Step 2: Convert to fraction form
    279,236.12/420,717.29 = 252,611.79/x
  3. Step 3: Cross multiply
    279,236.12x = 420,717.29 × 252,611.79
  4. Step 4: Simplify right side
    279,236.12x = 106,278,146,447.79
  5. Step 5: Solve for x
    x = 106,278,146,447.79/279,236.12
  6. Step 6: Final answer
    x = 380,603.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.