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Finding the Fourth Proportional to 250,699.28, 345,984 and 143,273.84

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Solution

The fourth proportional to 250,699.28, 345,984 and 143,273.84 is: 197,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,699.28 : 345,984 = 143,273.84 : x
  2. Step 2: Convert to fraction form
    250,699.28/345,984 = 143,273.84/x
  3. Step 3: Cross multiply
    250,699.28x = 345,984 × 143,273.84
  4. Step 4: Simplify right side
    250,699.28x = 49,570,456,258.56
  5. Step 5: Solve for x
    x = 49,570,456,258.56/250,699.28
  6. Step 6: Final answer
    x = 197,728.75

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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.