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Finding the Fourth Proportional to 326,993.19, 490,289.04 and 127,080.15

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Solution

The fourth proportional to 326,993.19, 490,289.04 and 127,080.15 is: 190,542.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,993.19 : 490,289.04 = 127,080.15 : x
  2. Step 2: Convert to fraction form
    326,993.19/490,289.04 = 127,080.15/x
  3. Step 3: Cross multiply
    326,993.19x = 490,289.04 × 127,080.15
  4. Step 4: Simplify right side
    326,993.19x = 62,306,004,746.56
  5. Step 5: Solve for x
    x = 62,306,004,746.56/326,993.19
  6. Step 6: Final answer
    x = 190,542.21

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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.