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Finding the Fourth Proportional to 258,228.44, 356,359.86 and 143,517.56

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Solution

The fourth proportional to 258,228.44, 356,359.86 and 143,517.56 is: 198,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,228.44 : 356,359.86 = 143,517.56 : x
  2. Step 2: Convert to fraction form
    258,228.44/356,359.86 = 143,517.56/x
  3. Step 3: Cross multiply
    258,228.44x = 356,359.86 × 143,517.56
  4. Step 4: Simplify right side
    258,228.44x = 51,143,897,589.14
  5. Step 5: Solve for x
    x = 51,143,897,589.14/258,228.44
  6. Step 6: Final answer
    x = 198,056.80

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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.