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Finding the Fourth Proportional to 201,408.51, 302,137.38 and 68,326.84

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Solution

The fourth proportional to 201,408.51, 302,137.38 and 68,326.84 is: 102,498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,408.51 : 302,137.38 = 68,326.84 : x
  2. Step 2: Convert to fraction form
    201,408.51/302,137.38 = 68,326.84/x
  3. Step 3: Cross multiply
    201,408.51x = 302,137.38 × 68,326.84
  4. Step 4: Simplify right side
    201,408.51x = 20,644,092,421.28
  5. Step 5: Solve for x
    x = 20,644,092,421.28/201,408.51
  6. Step 6: Final answer
    x = 102,498.61

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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.