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Finding the Fourth Proportional to 235,656.96, 353,274.66 and 85,791.66

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Solution

The fourth proportional to 235,656.96, 353,274.66 and 85,791.66 is: 128,610.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,656.96 : 353,274.66 = 85,791.66 : x
  2. Step 2: Convert to fraction form
    235,656.96/353,274.66 = 85,791.66/x
  3. Step 3: Cross multiply
    235,656.96x = 353,274.66 × 85,791.66
  4. Step 4: Simplify right side
    235,656.96x = 30,308,019,517.34
  5. Step 5: Solve for x
    x = 30,308,019,517.34/235,656.96
  6. Step 6: Final answer
    x = 128,610.75

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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.