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Finding the Fourth Proportional to 258,540.54, 356,799.51 and 145,370.58

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Solution

The fourth proportional to 258,540.54, 356,799.51 and 145,370.58 is: 200,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,540.54 : 356,799.51 = 145,370.58 : x
  2. Step 2: Convert to fraction form
    258,540.54/356,799.51 = 145,370.58/x
  3. Step 3: Cross multiply
    258,540.54x = 356,799.51 × 145,370.58
  4. Step 4: Simplify right side
    258,540.54x = 51,868,151,712.42
  5. Step 5: Solve for x
    x = 51,868,151,712.42/258,540.54
  6. Step 6: Final answer
    x = 200,619.03

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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.