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Finding the Fourth Proportional to 325,589.20, 488,456.70 and 125,891.80

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Solution

The fourth proportional to 325,589.20, 488,456.70 and 125,891.80 is: 188,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,589.20 : 488,456.70 = 125,891.80 : x
  2. Step 2: Convert to fraction form
    325,589.20/488,456.70 = 125,891.80/x
  3. Step 3: Cross multiply
    325,589.20x = 488,456.70 × 125,891.80
  4. Step 4: Simplify right side
    325,589.20x = 61,492,693,185.06
  5. Step 5: Solve for x
    x = 61,492,693,185.06/325,589.20
  6. Step 6: Final answer
    x = 188,865.89

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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.