Home / 326,072.20-489,108.30-211,910.80

Finding the Fourth Proportional to 326,072.20, 489,108.30 and 211,910.80

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Solution

The fourth proportional to 326,072.20, 489,108.30 and 211,910.80 is: 317,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,072.20 : 489,108.30 = 211,910.80 : x
  2. Step 2: Convert to fraction form
    326,072.20/489,108.30 = 211,910.80/x
  3. Step 3: Cross multiply
    326,072.20x = 489,108.30 × 211,910.80
  4. Step 4: Simplify right side
    326,072.20x = 103,647,331,139.64
  5. Step 5: Solve for x
    x = 103,647,331,139.64/326,072.20
  6. Step 6: Final answer
    x = 317,866.20

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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.