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Finding the Fourth Proportional to 322,780.50, 445,437.09 and 188,644.50

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Solution

The fourth proportional to 322,780.50, 445,437.09 and 188,644.50 is: 260,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,780.50 : 445,437.09 = 188,644.50 : x
  2. Step 2: Convert to fraction form
    322,780.50/445,437.09 = 188,644.50/x
  3. Step 3: Cross multiply
    322,780.50x = 445,437.09 × 188,644.50
  4. Step 4: Simplify right side
    322,780.50x = 84,029,257,124.51
  5. Step 5: Solve for x
    x = 84,029,257,124.51/322,780.50
  6. Step 6: Final answer
    x = 260,329.41

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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.