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Finding the Fourth Proportional to 258,247.97, 387,357.36 and 80,734.04

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Solution

The fourth proportional to 258,247.97, 387,357.36 and 80,734.04 is: 121,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,247.97 : 387,357.36 = 80,734.04 : x
  2. Step 2: Convert to fraction form
    258,247.97/387,357.36 = 80,734.04/x
  3. Step 3: Cross multiply
    258,247.97x = 387,357.36 × 80,734.04
  4. Step 4: Simplify right side
    258,247.97x = 31,272,922,659.75
  5. Step 5: Solve for x
    x = 31,272,922,659.75/258,247.97
  6. Step 6: Final answer
    x = 121,096.49

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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.