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Finding the Fourth Proportional to 318,551.54, 477,826.74 and 218,408.14

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Solution

The fourth proportional to 318,551.54, 477,826.74 and 218,408.14 is: 327,611.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,551.54 : 477,826.74 = 218,408.14 : x
  2. Step 2: Convert to fraction form
    318,551.54/477,826.74 = 218,408.14/x
  3. Step 3: Cross multiply
    318,551.54x = 477,826.74 × 218,408.14
  4. Step 4: Simplify right side
    318,551.54x = 104,361,248,331.10
  5. Step 5: Solve for x
    x = 104,361,248,331.10/318,551.54
  6. Step 6: Final answer
    x = 327,611.81

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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.