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Finding the Fourth Proportional to 325,024.80, 487,537.20 and 218,736.60

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Solution

The fourth proportional to 325,024.80, 487,537.20 and 218,736.60 is: 328,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,024.80 : 487,537.20 = 218,736.60 : x
  2. Step 2: Convert to fraction form
    325,024.80/487,537.20 = 218,736.60/x
  3. Step 3: Cross multiply
    325,024.80x = 487,537.20 × 218,736.60
  4. Step 4: Simplify right side
    325,024.80x = 106,642,229,501.52
  5. Step 5: Solve for x
    x = 106,642,229,501.52/325,024.80
  6. Step 6: Final answer
    x = 328,104.90

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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.