Home / 258,601.22-387,072.14-138,357.38

Finding the Fourth Proportional to 258,601.22, 387,072.14 and 138,357.38

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Solution

The fourth proportional to 258,601.22, 387,072.14 and 138,357.38 is: 207,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,601.22 : 387,072.14 = 138,357.38 : x
  2. Step 2: Convert to fraction form
    258,601.22/387,072.14 = 138,357.38/x
  3. Step 3: Cross multiply
    258,601.22x = 387,072.14 × 138,357.38
  4. Step 4: Simplify right side
    258,601.22x = 53,554,284,534.25
  5. Step 5: Solve for x
    x = 53,554,284,534.25/258,601.22
  6. Step 6: Final answer
    x = 207,092.16

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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.