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Finding the Fourth Proportional to 258,484.93, 387,745.83 and 68,944.22

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Solution

The fourth proportional to 258,484.93, 387,745.83 and 68,944.22 is: 103,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,484.93 : 387,745.83 = 68,944.22 : x
  2. Step 2: Convert to fraction form
    258,484.93/387,745.83 = 68,944.22/x
  3. Step 3: Cross multiply
    258,484.93x = 387,745.83 × 68,944.22
  4. Step 4: Simplify right side
    258,484.93x = 26,732,833,462.88
  5. Step 5: Solve for x
    x = 26,732,833,462.88/258,484.93
  6. Step 6: Final answer
    x = 103,421.25

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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.