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Finding the Fourth Proportional to 396,294.45, 594,486.78 and 143,693.91

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Solution

The fourth proportional to 396,294.45, 594,486.78 and 143,693.91 is: 215,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,294.45 : 594,486.78 = 143,693.91 : x
  2. Step 2: Convert to fraction form
    396,294.45/594,486.78 = 143,693.91/x
  3. Step 3: Cross multiply
    396,294.45x = 594,486.78 × 143,693.91
  4. Step 4: Simplify right side
    396,294.45x = 85,424,129,861.51
  5. Step 5: Solve for x
    x = 85,424,129,861.51/396,294.45
  6. Step 6: Final answer
    x = 215,557.22

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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.