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Finding the Fourth Proportional to 325,605.60, 488,334.60 and 115,243.56

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Solution

The fourth proportional to 325,605.60, 488,334.60 and 115,243.56 is: 172,839.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,605.60 : 488,334.60 = 115,243.56 : x
  2. Step 2: Convert to fraction form
    325,605.60/488,334.60 = 115,243.56/x
  3. Step 3: Cross multiply
    325,605.60x = 488,334.60 × 115,243.56
  4. Step 4: Simplify right side
    325,605.60x = 56,277,417,775.18
  5. Step 5: Solve for x
    x = 56,277,417,775.18/325,605.60
  6. Step 6: Final answer
    x = 172,839.22

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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.