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Finding the Fourth Proportional to 383,855.60, 529,736.76 and 211,772.72

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Solution

The fourth proportional to 383,855.60, 529,736.76 and 211,772.72 is: 292,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,855.60 : 529,736.76 = 211,772.72 : x
  2. Step 2: Convert to fraction form
    383,855.60/529,736.76 = 211,772.72/x
  3. Step 3: Cross multiply
    383,855.60x = 529,736.76 × 211,772.72
  4. Step 4: Simplify right side
    383,855.60x = 112,183,794,549.19
  5. Step 5: Solve for x
    x = 112,183,794,549.19/383,855.60
  6. Step 6: Final answer
    x = 292,255.20

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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.