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Finding the Fourth Proportional to 258,796.15, 387,632.81 and 125,396.64

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Solution

The fourth proportional to 258,796.15, 387,632.81 and 125,396.64 is: 187,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,796.15 : 387,632.81 = 125,396.64 : x
  2. Step 2: Convert to fraction form
    258,796.15/387,632.81 = 125,396.64/x
  3. Step 3: Cross multiply
    258,796.15x = 387,632.81 × 125,396.64
  4. Step 4: Simplify right side
    258,796.15x = 48,607,852,241.25
  5. Step 5: Solve for x
    x = 48,607,852,241.25/258,796.15
  6. Step 6: Final answer
    x = 187,822.94

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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.