Home / 426,190.80-639,286.20-248,606.40

Finding the Fourth Proportional to 426,190.80, 639,286.20 and 248,606.40

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Solution

The fourth proportional to 426,190.80, 639,286.20 and 248,606.40 is: 372,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,190.80 : 639,286.20 = 248,606.40 : x
  2. Step 2: Convert to fraction form
    426,190.80/639,286.20 = 248,606.40/x
  3. Step 3: Cross multiply
    426,190.80x = 639,286.20 × 248,606.40
  4. Step 4: Simplify right side
    426,190.80x = 158,930,640,751.68
  5. Step 5: Solve for x
    x = 158,930,640,751.68/426,190.80
  6. Step 6: Final answer
    x = 372,909.60

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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.