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Finding the Fourth Proportional to 235,135.38, 324,487.46 and 138,342.89

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Solution

The fourth proportional to 235,135.38, 324,487.46 and 138,342.89 is: 190,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,135.38 : 324,487.46 = 138,342.89 : x
  2. Step 2: Convert to fraction form
    235,135.38/324,487.46 = 138,342.89/x
  3. Step 3: Cross multiply
    235,135.38x = 324,487.46 × 138,342.89
  4. Step 4: Simplify right side
    235,135.38x = 44,890,531,344.27
  5. Step 5: Solve for x
    x = 44,890,531,344.27/235,135.38
  6. Step 6: Final answer
    x = 190,913.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.