Home / 439,857.20-659,785.80-298,139.60

Finding the Fourth Proportional to 439,857.20, 659,785.80 and 298,139.60

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Solution

The fourth proportional to 439,857.20, 659,785.80 and 298,139.60 is: 447,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,857.20 : 659,785.80 = 298,139.60 : x
  2. Step 2: Convert to fraction form
    439,857.20/659,785.80 = 298,139.60/x
  3. Step 3: Cross multiply
    439,857.20x = 659,785.80 × 298,139.60
  4. Step 4: Simplify right side
    439,857.20x = 196,708,274,497.68
  5. Step 5: Solve for x
    x = 196,708,274,497.68/439,857.20
  6. Step 6: Final answer
    x = 447,209.40

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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.