Home / 384,245.91-530,257.32-223,140.56

Finding the Fourth Proportional to 384,245.91, 530,257.32 and 223,140.56

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Solution

The fourth proportional to 384,245.91, 530,257.32 and 223,140.56 is: 307,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,245.91 : 530,257.32 = 223,140.56 : x
  2. Step 2: Convert to fraction form
    384,245.91/530,257.32 = 223,140.56/x
  3. Step 3: Cross multiply
    384,245.91x = 530,257.32 × 223,140.56
  4. Step 4: Simplify right side
    384,245.91x = 118,321,912,677.61
  5. Step 5: Solve for x
    x = 118,321,912,677.61/384,245.91
  6. Step 6: Final answer
    x = 307,932.78

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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.