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Finding the Fourth Proportional to 383,063.52, 528,616.82 and 208,629.76

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Solution

The fourth proportional to 383,063.52, 528,616.82 and 208,629.76 is: 287,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,063.52 : 528,616.82 = 208,629.76 : x
  2. Step 2: Convert to fraction form
    383,063.52/528,616.82 = 208,629.76/x
  3. Step 3: Cross multiply
    383,063.52x = 528,616.82 × 208,629.76
  4. Step 4: Simplify right side
    383,063.52x = 110,285,200,288.56
  5. Step 5: Solve for x
    x = 110,285,200,288.56/383,063.52
  6. Step 6: Final answer
    x = 287,903.17

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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.