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Finding the Fourth Proportional to 235,257.91, 352,916.93 and 85,568.69

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Solution

The fourth proportional to 235,257.91, 352,916.93 and 85,568.69 is: 128,363.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,257.91 : 352,916.93 = 85,568.69 : x
  2. Step 2: Convert to fraction form
    235,257.91/352,916.93 = 85,568.69/x
  3. Step 3: Cross multiply
    235,257.91x = 352,916.93 × 85,568.69
  4. Step 4: Simplify right side
    235,257.91x = 30,198,640,475.14
  5. Step 5: Solve for x
    x = 30,198,640,475.14/235,257.91
  6. Step 6: Final answer
    x = 128,363.98

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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.