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Finding the Fourth Proportional to 383,407.92, 529,100.52 and 208,977.96

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Solution

The fourth proportional to 383,407.92, 529,100.52 and 208,977.96 is: 288,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,407.92 : 529,100.52 = 208,977.96 : x
  2. Step 2: Convert to fraction form
    383,407.92/529,100.52 = 208,977.96/x
  3. Step 3: Cross multiply
    383,407.92x = 529,100.52 × 208,977.96
  4. Step 4: Simplify right side
    383,407.92x = 110,570,347,304.54
  5. Step 5: Solve for x
    x = 110,570,347,304.54/383,407.92
  6. Step 6: Final answer
    x = 288,388.27

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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.