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Finding the Fourth Proportional to 223,558, 335,337.86 and 212,346

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Solution

The fourth proportional to 223,558, 335,337.86 and 212,346 is: 318,519.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,558 : 335,337.86 = 212,346 : x
  2. Step 2: Convert to fraction form
    223,558/335,337.86 = 212,346/x
  3. Step 3: Cross multiply
    223,558x = 335,337.86 × 212,346
  4. Step 4: Simplify right side
    223,558x = 71,207,653,219.56
  5. Step 5: Solve for x
    x = 71,207,653,219.56/223,558
  6. Step 6: Final answer
    x = 318,519.82

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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.