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Finding the Fourth Proportional to 454,951.11, 682,402.02 and 139,408.94

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Solution

The fourth proportional to 454,951.11, 682,402.02 and 139,408.94 is: 209,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,951.11 : 682,402.02 = 139,408.94 : x
  2. Step 2: Convert to fraction form
    454,951.11/682,402.02 = 139,408.94/x
  3. Step 3: Cross multiply
    454,951.11x = 682,402.02 × 139,408.94
  4. Step 4: Simplify right side
    454,951.11x = 95,132,938,850.05
  5. Step 5: Solve for x
    x = 95,132,938,850.05/454,951.11
  6. Step 6: Final answer
    x = 209,105.85

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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.