Home / 258,517.44-387,776.16-81,025.38

Finding the Fourth Proportional to 258,517.44, 387,776.16 and 81,025.38

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Solution

The fourth proportional to 258,517.44, 387,776.16 and 81,025.38 is: 121,538.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,517.44 : 387,776.16 = 81,025.38 : x
  2. Step 2: Convert to fraction form
    258,517.44/387,776.16 = 81,025.38/x
  3. Step 3: Cross multiply
    258,517.44x = 387,776.16 × 81,025.38
  4. Step 4: Simplify right side
    258,517.44x = 31,419,710,718.94
  5. Step 5: Solve for x
    x = 31,419,710,718.94/258,517.44
  6. Step 6: Final answer
    x = 121,538.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.