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Finding the Fourth Proportional to 396,701.75, 595,051.41 and 143,981.91

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Solution

The fourth proportional to 396,701.75, 595,051.41 and 143,981.91 is: 215,972.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,701.75 : 595,051.41 = 143,981.91 : x
  2. Step 2: Convert to fraction form
    396,701.75/595,051.41 = 143,981.91/x
  3. Step 3: Cross multiply
    396,701.75x = 595,051.41 × 143,981.91
  4. Step 4: Simplify right side
    396,701.75x = 85,676,638,559.99
  5. Step 5: Solve for x
    x = 85,676,638,559.99/396,701.75
  6. Step 6: Final answer
    x = 215,972.42

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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.