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Finding the Fourth Proportional to 250,083.12, 345,142.44 and 142,679.64

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Solution

The fourth proportional to 250,083.12, 345,142.44 and 142,679.64 is: 196,913.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,083.12 : 345,142.44 = 142,679.64 : x
  2. Step 2: Convert to fraction form
    250,083.12/345,142.44 = 142,679.64/x
  3. Step 3: Cross multiply
    250,083.12x = 345,142.44 × 142,679.64
  4. Step 4: Simplify right side
    250,083.12x = 49,244,799,087.92
  5. Step 5: Solve for x
    x = 49,244,799,087.92/250,083.12
  6. Step 6: Final answer
    x = 196,913.73

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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.