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Finding the Fourth Proportional to 325,670.80, 488,506.20 and 219,382.60

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Solution

The fourth proportional to 325,670.80, 488,506.20 and 219,382.60 is: 329,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,670.80 : 488,506.20 = 219,382.60 : x
  2. Step 2: Convert to fraction form
    325,670.80/488,506.20 = 219,382.60/x
  3. Step 3: Cross multiply
    325,670.80x = 488,506.20 × 219,382.60
  4. Step 4: Simplify right side
    325,670.80x = 107,169,760,272.12
  5. Step 5: Solve for x
    x = 107,169,760,272.12/325,670.80
  6. Step 6: Final answer
    x = 329,073.90

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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.