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Finding the Fourth Proportional to 208,486.60, 312,540.36 and 108,529.36

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Solution

The fourth proportional to 208,486.60, 312,540.36 and 108,529.36 is: 162,695.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,486.60 : 312,540.36 = 108,529.36 : x
  2. Step 2: Convert to fraction form
    208,486.60/312,540.36 = 108,529.36/x
  3. Step 3: Cross multiply
    208,486.60x = 312,540.36 × 108,529.36
  4. Step 4: Simplify right side
    208,486.60x = 33,919,805,244.97
  5. Step 5: Solve for x
    x = 33,919,805,244.97/208,486.60
  6. Step 6: Final answer
    x = 162,695.37

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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.