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Finding the Fourth Proportional to 396,868.80, 595,886.40 and 239,404.80

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Solution

The fourth proportional to 396,868.80, 595,886.40 and 239,404.80 is: 359,459.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,868.80 : 595,886.40 = 239,404.80 : x
  2. Step 2: Convert to fraction form
    396,868.80/595,886.40 = 239,404.80/x
  3. Step 3: Cross multiply
    396,868.80x = 595,886.40 × 239,404.80
  4. Step 4: Simplify right side
    396,868.80x = 142,658,064,414.72
  5. Step 5: Solve for x
    x = 142,658,064,414.72/396,868.80
  6. Step 6: Final answer
    x = 359,459.01

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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.