Home / 213,391.20-320,078.40-55,620.96

Finding the Fourth Proportional to 213,391.20, 320,078.40 and 55,620.96

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Solution

The fourth proportional to 213,391.20, 320,078.40 and 55,620.96 is: 83,429.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,391.20 : 320,078.40 = 55,620.96 : x
  2. Step 2: Convert to fraction form
    213,391.20/320,078.40 = 55,620.96/x
  3. Step 3: Cross multiply
    213,391.20x = 320,078.40 × 55,620.96
  4. Step 4: Simplify right side
    213,391.20x = 17,803,067,883.26
  5. Step 5: Solve for x
    x = 17,803,067,883.26/213,391.20
  6. Step 6: Final answer
    x = 83,429.25

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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.