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Finding the Fourth Proportional to 396,447.40, 594,549.60 and 130,146.40

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Solution

The fourth proportional to 396,447.40, 594,549.60 and 130,146.40 is: 195,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,447.40 : 594,549.60 = 130,146.40 : x
  2. Step 2: Convert to fraction form
    396,447.40/594,549.60 = 130,146.40/x
  3. Step 3: Cross multiply
    396,447.40x = 594,549.60 × 130,146.40
  4. Step 4: Simplify right side
    396,447.40x = 77,378,490,061.44
  5. Step 5: Solve for x
    x = 77,378,490,061.44/396,447.40
  6. Step 6: Final answer
    x = 195,179.71

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1.5x scale

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.