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Finding the Fourth Proportional to 258,610.39, 356,876.80 and 149,719.32

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Solution

The fourth proportional to 258,610.39, 356,876.80 and 149,719.32 is: 206,609.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,610.39 : 356,876.80 = 149,719.32 : x
  2. Step 2: Convert to fraction form
    258,610.39/356,876.80 = 149,719.32/x
  3. Step 3: Cross multiply
    258,610.39x = 356,876.80 × 149,719.32
  4. Step 4: Simplify right side
    258,610.39x = 53,431,351,445.48
  5. Step 5: Solve for x
    x = 53,431,351,445.48/258,610.39
  6. Step 6: Final answer
    x = 206,609.46

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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.