Home / 420,238.43-579,928.25-229,251.81

Finding the Fourth Proportional to 420,238.43, 579,928.25 and 229,251.81

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Solution

The fourth proportional to 420,238.43, 579,928.25 and 229,251.81 is: 316,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,238.43 : 579,928.25 = 229,251.81 : x
  2. Step 2: Convert to fraction form
    420,238.43/579,928.25 = 229,251.81/x
  3. Step 3: Cross multiply
    420,238.43x = 579,928.25 × 229,251.81
  4. Step 4: Simplify right side
    420,238.43x = 132,949,600,982.63
  5. Step 5: Solve for x
    x = 132,949,600,982.63/420,238.43
  6. Step 6: Final answer
    x = 316,367.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.