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Finding the Fourth Proportional to 383,257.74, 528,778.62 and 222,081.69

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Solution

The fourth proportional to 383,257.74, 528,778.62 and 222,081.69 is: 306,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,257.74 : 528,778.62 = 222,081.69 : x
  2. Step 2: Convert to fraction form
    383,257.74/528,778.62 = 222,081.69/x
  3. Step 3: Cross multiply
    383,257.74x = 528,778.62 × 222,081.69
  4. Step 4: Simplify right side
    383,257.74x = 117,432,049,565.47
  5. Step 5: Solve for x
    x = 117,432,049,565.47/383,257.74
  6. Step 6: Final answer
    x = 306,404.90

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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.