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Finding the Fourth Proportional to 258,404.94, 387,610.41 and 68,864.22

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Solution

The fourth proportional to 258,404.94, 387,610.41 and 68,864.22 is: 103,297.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,404.94 : 387,610.41 = 68,864.22 : x
  2. Step 2: Convert to fraction form
    258,404.94/387,610.41 = 68,864.22/x
  3. Step 3: Cross multiply
    258,404.94x = 387,610.41 × 68,864.22
  4. Step 4: Simplify right side
    258,404.94x = 26,692,488,548.53
  5. Step 5: Solve for x
    x = 26,692,488,548.53/258,404.94
  6. Step 6: Final answer
    x = 103,297.13

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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.