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Finding the Fourth Proportional to 318,157.72, 477,135.16 and 104,885.89

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Solution

The fourth proportional to 318,157.72, 477,135.16 and 104,885.89 is: 157,295.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,157.72 : 477,135.16 = 104,885.89 : x
  2. Step 2: Convert to fraction form
    318,157.72/477,135.16 = 104,885.89/x
  3. Step 3: Cross multiply
    318,157.72x = 477,135.16 × 104,885.89
  4. Step 4: Simplify right side
    318,157.72x = 50,044,744,451.84
  5. Step 5: Solve for x
    x = 50,044,744,451.84/318,157.72
  6. Step 6: Final answer
    x = 157,295.39

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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.