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Finding the Fourth Proportional to 396,032.60, 594,048.90 and 129,728.90

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Solution

The fourth proportional to 396,032.60, 594,048.90 and 129,728.90 is: 194,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,032.60 : 594,048.90 = 129,728.90 : x
  2. Step 2: Convert to fraction form
    396,032.60/594,048.90 = 129,728.90/x
  3. Step 3: Cross multiply
    396,032.60x = 594,048.90 × 129,728.90
  4. Step 4: Simplify right side
    396,032.60x = 77,065,310,343.21
  5. Step 5: Solve for x
    x = 77,065,310,343.21/396,032.60
  6. Step 6: Final answer
    x = 194,593.35

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Similar ratio
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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.