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Finding the Fourth Proportional to 396,009.33, 594,018.85 and 261,931.65

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Solution

The fourth proportional to 396,009.33, 594,018.85 and 261,931.65 is: 392,900.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,009.33 : 594,018.85 = 261,931.65 : x
  2. Step 2: Convert to fraction form
    396,009.33/594,018.85 = 261,931.65/x
  3. Step 3: Cross multiply
    396,009.33x = 594,018.85 × 261,931.65
  4. Step 4: Simplify right side
    396,009.33x = 155,592,337,511.60
  5. Step 5: Solve for x
    x = 155,592,337,511.60/396,009.33
  6. Step 6: Final answer
    x = 392,900.69

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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.