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Finding the Fourth Proportional to 396,007.20, 593,792.10 and 129,630.60

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Solution

The fourth proportional to 396,007.20, 593,792.10 and 129,630.60 is: 194,374.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,007.20 : 593,792.10 = 129,630.60 : x
  2. Step 2: Convert to fraction form
    396,007.20/593,792.10 = 129,630.60/x
  3. Step 3: Cross multiply
    396,007.20x = 593,792.10 × 129,630.60
  4. Step 4: Simplify right side
    396,007.20x = 76,973,626,198.26
  5. Step 5: Solve for x
    x = 76,973,626,198.26/396,007.20
  6. Step 6: Final answer
    x = 194,374.31

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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.