Home / 420,212.98-579,890.17-229,222.27

Finding the Fourth Proportional to 420,212.98, 579,890.17 and 229,222.27

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Solution

The fourth proportional to 420,212.98, 579,890.17 and 229,222.27 is: 316,324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,212.98 : 579,890.17 = 229,222.27 : x
  2. Step 2: Convert to fraction form
    420,212.98/579,890.17 = 229,222.27/x
  3. Step 3: Cross multiply
    420,212.98x = 579,890.17 × 229,222.27
  4. Step 4: Simplify right side
    420,212.98x = 132,923,741,118.09
  5. Step 5: Solve for x
    x = 132,923,741,118.09/420,212.98
  6. Step 6: Final answer
    x = 316,324.69

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1.5x scale

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.