Home / 258,036.43-356,078.16-143,322.51

Finding the Fourth Proportional to 258,036.43, 356,078.16 and 143,322.51

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Solution

The fourth proportional to 258,036.43, 356,078.16 and 143,322.51 is: 197,778.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,036.43 : 356,078.16 = 143,322.51 : x
  2. Step 2: Convert to fraction form
    258,036.43/356,078.16 = 143,322.51/x
  3. Step 3: Cross multiply
    258,036.43x = 356,078.16 × 143,322.51
  4. Step 4: Simplify right side
    258,036.43x = 51,034,015,647.38
  5. Step 5: Solve for x
    x = 51,034,015,647.38/258,036.43
  6. Step 6: Final answer
    x = 197,778.34

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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.