Home / 353,982.66-531,090.63-129,411.78

Finding the Fourth Proportional to 353,982.66, 531,090.63 and 129,411.78

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Solution

The fourth proportional to 353,982.66, 531,090.63 and 129,411.78 is: 194,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,982.66 : 531,090.63 = 129,411.78 : x
  2. Step 2: Convert to fraction form
    353,982.66/531,090.63 = 129,411.78/x
  3. Step 3: Cross multiply
    353,982.66x = 531,090.63 × 129,411.78
  4. Step 4: Simplify right side
    353,982.66x = 68,729,383,769.62
  5. Step 5: Solve for x
    x = 68,729,383,769.62/353,982.66
  6. Step 6: Final answer
    x = 194,160.31

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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.