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Finding the Fourth Proportional to 258,524.51, 387,783.86 and 100,863.68

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Solution

The fourth proportional to 258,524.51, 387,783.86 and 100,863.68 is: 151,294.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,524.51 : 387,783.86 = 100,863.68 : x
  2. Step 2: Convert to fraction form
    258,524.51/387,783.86 = 100,863.68/x
  3. Step 3: Cross multiply
    258,524.51x = 387,783.86 × 100,863.68
  4. Step 4: Simplify right side
    258,524.51x = 39,113,304,720.97
  5. Step 5: Solve for x
    x = 39,113,304,720.97/258,524.51
  6. Step 6: Final answer
    x = 151,294.38

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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.