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Finding the Fourth Proportional to 318,648.42, 439,740.36 and 182,704.50

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Solution

The fourth proportional to 318,648.42, 439,740.36 and 182,704.50 is: 252,135.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,648.42 : 439,740.36 = 182,704.50 : x
  2. Step 2: Convert to fraction form
    318,648.42/439,740.36 = 182,704.50/x
  3. Step 3: Cross multiply
    318,648.42x = 439,740.36 × 182,704.50
  4. Step 4: Simplify right side
    318,648.42x = 80,342,542,603.62
  5. Step 5: Solve for x
    x = 80,342,542,603.62/318,648.42
  6. Step 6: Final answer
    x = 252,135.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.