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Finding the Fourth Proportional to 383,457.90, 529,195 and 211,375.62

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Solution

The fourth proportional to 383,457.90, 529,195 and 211,375.62 is: 291,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,457.90 : 529,195 = 211,375.62 : x
  2. Step 2: Convert to fraction form
    383,457.90/529,195 = 211,375.62/x
  3. Step 3: Cross multiply
    383,457.90x = 529,195 × 211,375.62
  4. Step 4: Simplify right side
    383,457.90x = 111,858,921,225.90
  5. Step 5: Solve for x
    x = 111,858,921,225.90/383,457.90
  6. Step 6: Final answer
    x = 291,711.09

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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.