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Finding the Fourth Proportional to 258,568.80, 356,820.72 and 143,846.16

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Solution

The fourth proportional to 258,568.80, 356,820.72 and 143,846.16 is: 198,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,568.80 : 356,820.72 = 143,846.16 : x
  2. Step 2: Convert to fraction form
    258,568.80/356,820.72 = 143,846.16/x
  3. Step 3: Cross multiply
    258,568.80x = 356,820.72 × 143,846.16
  4. Step 4: Simplify right side
    258,568.80x = 51,327,290,380.44
  5. Step 5: Solve for x
    x = 51,327,290,380.44/258,568.80
  6. Step 6: Final answer
    x = 198,505.35

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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.