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Finding the Fourth Proportional to 396,240, 594,357.95 and 96,722.15

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Solution

The fourth proportional to 396,240, 594,357.95 and 96,722.15 is: 145,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,240 : 594,357.95 = 96,722.15 : x
  2. Step 2: Convert to fraction form
    396,240/594,357.95 = 96,722.15/x
  3. Step 3: Cross multiply
    396,240x = 594,357.95 × 96,722.15
  4. Step 4: Simplify right side
    396,240x = 57,487,577,065.89
  5. Step 5: Solve for x
    x = 57,487,577,065.89/396,240
  6. Step 6: Final answer
    x = 145,082.72

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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.