Home / 326,548.20-489,822.30-139,578.60

Finding the Fourth Proportional to 326,548.20, 489,822.30 and 139,578.60

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Solution

The fourth proportional to 326,548.20, 489,822.30 and 139,578.60 is: 209,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,548.20 : 489,822.30 = 139,578.60 : x
  2. Step 2: Convert to fraction form
    326,548.20/489,822.30 = 139,578.60/x
  3. Step 3: Cross multiply
    326,548.20x = 489,822.30 × 139,578.60
  4. Step 4: Simplify right side
    326,548.20x = 68,368,710,882.78
  5. Step 5: Solve for x
    x = 68,368,710,882.78/326,548.20
  6. Step 6: Final answer
    x = 209,367.90

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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.