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Finding the Fourth Proportional to 223,556, 335,334.86 and 212,344

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Solution

The fourth proportional to 223,556, 335,334.86 and 212,344 is: 318,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,556 : 335,334.86 = 212,344 : x
  2. Step 2: Convert to fraction form
    223,556/335,334.86 = 212,344/x
  3. Step 3: Cross multiply
    223,556x = 335,334.86 × 212,344
  4. Step 4: Simplify right side
    223,556x = 71,206,345,511.84
  5. Step 5: Solve for x
    x = 71,206,345,511.84/223,556
  6. Step 6: Final answer
    x = 318,516.82

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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.