Home / 420,826.20-580,735.80-229,839.60

Finding the Fourth Proportional to 420,826.20, 580,735.80 and 229,839.60

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Solution

The fourth proportional to 420,826.20, 580,735.80 and 229,839.60 is: 317,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.20 : 580,735.80 = 229,839.60 : x
  2. Step 2: Convert to fraction form
    420,826.20/580,735.80 = 229,839.60/x
  3. Step 3: Cross multiply
    420,826.20x = 580,735.80 × 229,839.60
  4. Step 4: Simplify right side
    420,826.20x = 133,476,083,977.68
  5. Step 5: Solve for x
    x = 133,476,083,977.68/420,826.20
  6. Step 6: Final answer
    x = 317,176.27

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1.5x scale

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.