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Finding the Fourth Proportional to 325,536.60, 487,916.10 and 135,996.60

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Solution

The fourth proportional to 325,536.60, 487,916.10 and 135,996.60 is: 203,832.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,536.60 : 487,916.10 = 135,996.60 : x
  2. Step 2: Convert to fraction form
    325,536.60/487,916.10 = 135,996.60/x
  3. Step 3: Cross multiply
    325,536.60x = 487,916.10 × 135,996.60
  4. Step 4: Simplify right side
    325,536.60x = 66,354,930,685.26
  5. Step 5: Solve for x
    x = 66,354,930,685.26/325,536.60
  6. Step 6: Final answer
    x = 203,832.47

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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.