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Finding the Fourth Proportional to 383,063.82, 528,627.76 and 210,982.96

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Solution

The fourth proportional to 383,063.82, 528,627.76 and 210,982.96 is: 291,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,063.82 : 528,627.76 = 210,982.96 : x
  2. Step 2: Convert to fraction form
    383,063.82/528,627.76 = 210,982.96/x
  3. Step 3: Cross multiply
    383,063.82x = 528,627.76 × 210,982.96
  4. Step 4: Simplify right side
    383,063.82x = 111,531,449,542.97
  5. Step 5: Solve for x
    x = 111,531,449,542.97/383,063.82
  6. Step 6: Final answer
    x = 291,156.31

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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.