Home / 439,535.28-659,084.78-139,976.80

Finding the Fourth Proportional to 439,535.28, 659,084.78 and 139,976.80

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Solution

The fourth proportional to 439,535.28, 659,084.78 and 139,976.80 is: 209,895.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,535.28 : 659,084.78 = 139,976.80 : x
  2. Step 2: Convert to fraction form
    439,535.28/659,084.78 = 139,976.80/x
  3. Step 3: Cross multiply
    439,535.28x = 659,084.78 × 139,976.80
  4. Step 4: Simplify right side
    439,535.28x = 92,256,578,433.10
  5. Step 5: Solve for x
    x = 92,256,578,433.10/439,535.28
  6. Step 6: Final answer
    x = 209,895.73

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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.