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Finding the Fourth Proportional to 235,435.44, 353,375.10 and 85,820.34

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Solution

The fourth proportional to 235,435.44, 353,375.10 and 85,820.34 is: 128,811.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,435.44 : 353,375.10 = 85,820.34 : x
  2. Step 2: Convert to fraction form
    235,435.44/353,375.10 = 85,820.34/x
  3. Step 3: Cross multiply
    235,435.44x = 353,375.10 × 85,820.34
  4. Step 4: Simplify right side
    235,435.44x = 30,326,771,229.53
  5. Step 5: Solve for x
    x = 30,326,771,229.53/235,435.44
  6. Step 6: Final answer
    x = 128,811.41

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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.