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Finding the Fourth Proportional to 318,288.86, 439,241.57 and 173,096.01

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Solution

The fourth proportional to 318,288.86, 439,241.57 and 173,096.01 is: 238,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,288.86 : 439,241.57 = 173,096.01 : x
  2. Step 2: Convert to fraction form
    318,288.86/439,241.57 = 173,096.01/x
  3. Step 3: Cross multiply
    318,288.86x = 439,241.57 × 173,096.01
  4. Step 4: Simplify right side
    318,288.86x = 76,030,962,183.38
  5. Step 5: Solve for x
    x = 76,030,962,183.38/318,288.86
  6. Step 6: Final answer
    x = 238,874.09

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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.