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Finding the Fourth Proportional to 256,568.63, 384,916.01 and 88,091.42

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Solution

The fourth proportional to 256,568.63, 384,916.01 and 88,091.42 is: 132,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,568.63 : 384,916.01 = 88,091.42 : x
  2. Step 2: Convert to fraction form
    256,568.63/384,916.01 = 88,091.42/x
  3. Step 3: Cross multiply
    256,568.63x = 384,916.01 × 88,091.42
  4. Step 4: Simplify right side
    256,568.63x = 33,907,795,536.60
  5. Step 5: Solve for x
    x = 33,907,795,536.60/256,568.63
  6. Step 6: Final answer
    x = 132,158.78

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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.