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Finding the Fourth Proportional to 330,831.80, 496,247.70 and 204,860.60

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Solution

The fourth proportional to 330,831.80, 496,247.70 and 204,860.60 is: 307,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,831.80 : 496,247.70 = 204,860.60 : x
  2. Step 2: Convert to fraction form
    330,831.80/496,247.70 = 204,860.60/x
  3. Step 3: Cross multiply
    330,831.80x = 496,247.70 × 204,860.60
  4. Step 4: Simplify right side
    330,831.80x = 101,661,601,570.62
  5. Step 5: Solve for x
    x = 101,661,601,570.62/330,831.80
  6. Step 6: Final answer
    x = 307,290.90

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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.