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Finding the Fourth Proportional to 326,744.75, 490,147.37 and 127,080.29

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Solution

The fourth proportional to 326,744.75, 490,147.37 and 127,080.29 is: 190,632.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,744.75 : 490,147.37 = 127,080.29 : x
  2. Step 2: Convert to fraction form
    326,744.75/490,147.37 = 127,080.29/x
  3. Step 3: Cross multiply
    326,744.75x = 490,147.37 × 127,080.29
  4. Step 4: Simplify right side
    326,744.75x = 62,288,066,836.20
  5. Step 5: Solve for x
    x = 62,288,066,836.20/326,744.75
  6. Step 6: Final answer
    x = 190,632.19

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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.