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Finding the Fourth Proportional to 258,164.42, 387,398.32 and 108,393.19

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Solution

The fourth proportional to 258,164.42, 387,398.32 and 108,393.19 is: 162,653.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,164.42 : 387,398.32 = 108,393.19 : x
  2. Step 2: Convert to fraction form
    258,164.42/387,398.32 = 108,393.19/x
  3. Step 3: Cross multiply
    258,164.42x = 387,398.32 × 108,393.19
  4. Step 4: Simplify right side
    258,164.42x = 41,991,339,705.44
  5. Step 5: Solve for x
    x = 41,991,339,705.44/258,164.42
  6. Step 6: Final answer
    x = 162,653.48

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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.