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Finding the Fourth Proportional to 318,408.52, 477,447.90 and 93,739.72

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Solution

The fourth proportional to 318,408.52, 477,447.90 and 93,739.72 is: 140,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,408.52 : 477,447.90 = 93,739.72 : x
  2. Step 2: Convert to fraction form
    318,408.52/477,447.90 = 93,739.72/x
  3. Step 3: Cross multiply
    318,408.52x = 477,447.90 × 93,739.72
  4. Step 4: Simplify right side
    318,408.52x = 44,755,832,460.59
  5. Step 5: Solve for x
    x = 44,755,832,460.59/318,408.52
  6. Step 6: Final answer
    x = 140,561.04

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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.