Home / 326,243.10-489,118.35-213,951.60

Finding the Fourth Proportional to 326,243.10, 489,118.35 and 213,951.60

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Solution

The fourth proportional to 326,243.10, 489,118.35 and 213,951.60 is: 320,765.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,243.10 : 489,118.35 = 213,951.60 : x
  2. Step 2: Convert to fraction form
    326,243.10/489,118.35 = 213,951.60/x
  3. Step 3: Cross multiply
    326,243.10x = 489,118.35 × 213,951.60
  4. Step 4: Simplify right side
    326,243.10x = 104,647,653,571.86
  5. Step 5: Solve for x
    x = 104,647,653,571.86/326,243.10
  6. Step 6: Final answer
    x = 320,765.88

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1.5x scale

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.