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Finding the Fourth Proportional to 235,436.44, 353,376.60 and 85,821.34

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Solution

The fourth proportional to 235,436.44, 353,376.60 and 85,821.34 is: 128,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,436.44 : 353,376.60 = 85,821.34 : x
  2. Step 2: Convert to fraction form
    235,436.44/353,376.60 = 85,821.34/x
  3. Step 3: Cross multiply
    235,436.44x = 353,376.60 × 85,821.34
  4. Step 4: Simplify right side
    235,436.44x = 30,327,253,336.64
  5. Step 5: Solve for x
    x = 30,327,253,336.64/235,436.44
  6. Step 6: Final answer
    x = 128,812.91

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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.