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Finding the Fourth Proportional to 383,378.91, 529,041.29 and 211,296.33

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Solution

The fourth proportional to 383,378.91, 529,041.29 and 211,296.33 is: 291,577.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,378.91 : 529,041.29 = 211,296.33 : x
  2. Step 2: Convert to fraction form
    383,378.91/529,041.29 = 211,296.33/x
  3. Step 3: Cross multiply
    383,378.91x = 529,041.29 × 211,296.33
  4. Step 4: Simplify right side
    383,378.91x = 111,784,481,938.98
  5. Step 5: Solve for x
    x = 111,784,481,938.98/383,378.91
  6. Step 6: Final answer
    x = 291,577.03

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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.