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Finding the Fourth Proportional to 250,091.31, 345,158.86 and 142,636.71

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Solution

The fourth proportional to 250,091.31, 345,158.86 and 142,636.71 is: 196,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,091.31 : 345,158.86 = 142,636.71 : x
  2. Step 2: Convert to fraction form
    250,091.31/345,158.86 = 142,636.71/x
  3. Step 3: Cross multiply
    250,091.31x = 345,158.86 × 142,636.71
  4. Step 4: Simplify right side
    250,091.31x = 49,232,324,217.75
  5. Step 5: Solve for x
    x = 49,232,324,217.75/250,091.31
  6. Step 6: Final answer
    x = 196,857.40

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1.5x scale

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.