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Finding the Fourth Proportional to 396,855.55, 547,645.07 and 235,706.45

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Solution

The fourth proportional to 396,855.55, 547,645.07 and 235,706.45 is: 325,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,855.55 : 547,645.07 = 235,706.45 : x
  2. Step 2: Convert to fraction form
    396,855.55/547,645.07 = 235,706.45/x
  3. Step 3: Cross multiply
    396,855.55x = 547,645.07 × 235,706.45
  4. Step 4: Simplify right side
    396,855.55x = 129,083,474,131.17
  5. Step 5: Solve for x
    x = 129,083,474,131.17/396,855.55
  6. Step 6: Final answer
    x = 325,265.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.