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Finding the Fourth Proportional to 325,612.20, 488,187.90 and 125,855.40

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Solution

The fourth proportional to 325,612.20, 488,187.90 and 125,855.40 is: 188,694.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,612.20 : 488,187.90 = 125,855.40 : x
  2. Step 2: Convert to fraction form
    325,612.20/488,187.90 = 125,855.40/x
  3. Step 3: Cross multiply
    325,612.20x = 488,187.90 × 125,855.40
  4. Step 4: Simplify right side
    325,612.20x = 61,441,083,429.66
  5. Step 5: Solve for x
    x = 61,441,083,429.66/325,612.20
  6. Step 6: Final answer
    x = 188,694.05

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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.