Home / 326,266.20-489,399.30-212,104.80

Finding the Fourth Proportional to 326,266.20, 489,399.30 and 212,104.80

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Solution

The fourth proportional to 326,266.20, 489,399.30 and 212,104.80 is: 318,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,266.20 : 489,399.30 = 212,104.80 : x
  2. Step 2: Convert to fraction form
    326,266.20/489,399.30 = 212,104.80/x
  3. Step 3: Cross multiply
    326,266.20x = 489,399.30 × 212,104.80
  4. Step 4: Simplify right side
    326,266.20x = 103,803,940,646.64
  5. Step 5: Solve for x
    x = 103,803,940,646.64/326,266.20
  6. Step 6: Final answer
    x = 318,157.20

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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.