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Finding the Fourth Proportional to 396,954.80, 596,123.40 and 210,330.80

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Solution

The fourth proportional to 396,954.80, 596,123.40 and 210,330.80 is: 315,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,954.80 : 596,123.40 = 210,330.80 : x
  2. Step 2: Convert to fraction form
    396,954.80/596,123.40 = 210,330.80/x
  3. Step 3: Cross multiply
    396,954.80x = 596,123.40 × 210,330.80
  4. Step 4: Simplify right side
    396,954.80x = 125,383,111,620.72
  5. Step 5: Solve for x
    x = 125,383,111,620.72/396,954.80
  6. Step 6: Final answer
    x = 315,862.44

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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.