Home / 490,739.19-736,161.56-206,458.68

Finding the Fourth Proportional to 490,739.19, 736,161.56 and 206,458.68

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Solution

The fourth proportional to 490,739.19, 736,161.56 and 206,458.68 is: 309,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,739.19 : 736,161.56 = 206,458.68 : x
  2. Step 2: Convert to fraction form
    490,739.19/736,161.56 = 206,458.68/x
  3. Step 3: Cross multiply
    490,739.19x = 736,161.56 × 206,458.68
  4. Step 4: Simplify right side
    490,739.19x = 151,986,943,944.34
  5. Step 5: Solve for x
    x = 151,986,943,944.34/490,739.19
  6. Step 6: Final answer
    x = 309,710.22

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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.