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Finding the Fourth Proportional to 327,495.60, 491,243.36 and 90,838.28

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Solution

The fourth proportional to 327,495.60, 491,243.36 and 90,838.28 is: 136,257.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,495.60 : 491,243.36 = 90,838.28 : x
  2. Step 2: Convert to fraction form
    327,495.60/491,243.36 = 90,838.28/x
  3. Step 3: Cross multiply
    327,495.60x = 491,243.36 × 90,838.28
  4. Step 4: Simplify right side
    327,495.60x = 44,623,701,429.63
  5. Step 5: Solve for x
    x = 44,623,701,429.63/327,495.60
  6. Step 6: Final answer
    x = 136,257.41

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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.