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Finding the Fourth Proportional to 258,346.44, 387,548.82 and 108,558.81

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Solution

The fourth proportional to 258,346.44, 387,548.82 and 108,558.81 is: 162,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,346.44 : 387,548.82 = 108,558.81 : x
  2. Step 2: Convert to fraction form
    258,346.44/387,548.82 = 108,558.81/x
  3. Step 3: Cross multiply
    258,346.44x = 387,548.82 × 108,558.81
  4. Step 4: Simplify right side
    258,346.44x = 42,071,838,716.10
  5. Step 5: Solve for x
    x = 42,071,838,716.10/258,346.44
  6. Step 6: Final answer
    x = 162,850.47

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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.