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Finding the Fourth Proportional to 396,258.78, 594,367.47 and 129,984.24

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Solution

The fourth proportional to 396,258.78, 594,367.47 and 129,984.24 is: 194,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,258.78 : 594,367.47 = 129,984.24 : x
  2. Step 2: Convert to fraction form
    396,258.78/594,367.47 = 129,984.24/x
  3. Step 3: Cross multiply
    396,258.78x = 594,367.47 × 129,984.24
  4. Step 4: Simplify right side
    396,258.78x = 77,258,403,868.67
  5. Step 5: Solve for x
    x = 77,258,403,868.67/396,258.78
  6. Step 6: Final answer
    x = 194,969.57

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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.