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Finding the Fourth Proportional to 396,448.40, 594,551.10 and 130,147.40

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Solution

The fourth proportional to 396,448.40, 594,551.10 and 130,147.40 is: 195,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,448.40 : 594,551.10 = 130,147.40 : x
  2. Step 2: Convert to fraction form
    396,448.40/594,551.10 = 130,147.40/x
  3. Step 3: Cross multiply
    396,448.40x = 594,551.10 × 130,147.40
  4. Step 4: Simplify right side
    396,448.40x = 77,379,279,832.14
  5. Step 5: Solve for x
    x = 77,379,279,832.14/396,448.40
  6. Step 6: Final answer
    x = 195,181.21

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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.