Home / 325,828.20-489,179.70-208,021.80

Finding the Fourth Proportional to 325,828.20, 489,179.70 and 208,021.80

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Solution

The fourth proportional to 325,828.20, 489,179.70 and 208,021.80 is: 312,311.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,828.20 : 489,179.70 = 208,021.80 : x
  2. Step 2: Convert to fraction form
    325,828.20/489,179.70 = 208,021.80/x
  3. Step 3: Cross multiply
    325,828.20x = 489,179.70 × 208,021.80
  4. Step 4: Simplify right side
    325,828.20x = 101,760,041,717.46
  5. Step 5: Solve for x
    x = 101,760,041,717.46/325,828.20
  6. Step 6: Final answer
    x = 312,311.95

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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.