Home / 420,205.30-579,887.52-229,222.72

Finding the Fourth Proportional to 420,205.30, 579,887.52 and 229,222.72

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Solution

The fourth proportional to 420,205.30, 579,887.52 and 229,222.72 is: 316,329.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,205.30 : 579,887.52 = 229,222.72 : x
  2. Step 2: Convert to fraction form
    420,205.30/579,887.52 = 229,222.72/x
  3. Step 3: Cross multiply
    420,205.30x = 579,887.52 × 229,222.72
  4. Step 4: Simplify right side
    420,205.30x = 132,923,394,628.45
  5. Step 5: Solve for x
    x = 132,923,394,628.45/420,205.30
  6. Step 6: Final answer
    x = 316,329.65

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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.