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Finding the Fourth Proportional to 550,055.58, 759,078.44 and 305,057.81

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Solution

The fourth proportional to 550,055.58, 759,078.44 and 305,057.81 is: 420,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,055.58 : 759,078.44 = 305,057.81 : x
  2. Step 2: Convert to fraction form
    550,055.58/759,078.44 = 305,057.81/x
  3. Step 3: Cross multiply
    550,055.58x = 759,078.44 × 305,057.81
  4. Step 4: Simplify right side
    550,055.58x = 231,562,801,203.94
  5. Step 5: Solve for x
    x = 231,562,801,203.94/550,055.58
  6. Step 6: Final answer
    x = 420,980.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.