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Finding the Fourth Proportional to 353,239.25, 529,481.41 and 256,945.64

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Solution

The fourth proportional to 353,239.25, 529,481.41 and 256,945.64 is: 385,143.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,239.25 : 529,481.41 = 256,945.64 : x
  2. Step 2: Convert to fraction form
    353,239.25/529,481.41 = 256,945.64/x
  3. Step 3: Cross multiply
    353,239.25x = 529,481.41 × 256,945.64
  4. Step 4: Simplify right side
    353,239.25x = 136,047,936,470.78
  5. Step 5: Solve for x
    x = 136,047,936,470.78/353,239.25
  6. Step 6: Final answer
    x = 385,143.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.