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Finding the Fourth Proportional to 394,080.90, 590,975.55 and 127,850.10

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Solution

The fourth proportional to 394,080.90, 590,975.55 and 127,850.10 is: 191,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,080.90 : 590,975.55 = 127,850.10 : x
  2. Step 2: Convert to fraction form
    394,080.90/590,975.55 = 127,850.10/x
  3. Step 3: Cross multiply
    394,080.90x = 590,975.55 × 127,850.10
  4. Step 4: Simplify right side
    394,080.90x = 75,556,283,165.06
  5. Step 5: Solve for x
    x = 75,556,283,165.06/394,080.90
  6. Step 6: Final answer
    x = 191,727.85

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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.