Home / 258,685.96-356,979.24-143,962.78

Finding the Fourth Proportional to 258,685.96, 356,979.24 and 143,962.78

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Solution

The fourth proportional to 258,685.96, 356,979.24 and 143,962.78 is: 198,664.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,685.96 : 356,979.24 = 143,962.78 : x
  2. Step 2: Convert to fraction form
    258,685.96/356,979.24 = 143,962.78/x
  3. Step 3: Cross multiply
    258,685.96x = 356,979.24 × 143,962.78
  4. Step 4: Simplify right side
    258,685.96x = 51,391,723,792.69
  5. Step 5: Solve for x
    x = 51,391,723,792.69/258,685.96
  6. Step 6: Final answer
    x = 198,664.53

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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.