Home / 420,828.20-580,738.56-229,841.60

Finding the Fourth Proportional to 420,828.20, 580,738.56 and 229,841.60

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Solution

The fourth proportional to 420,828.20, 580,738.56 and 229,841.60 is: 317,179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,828.20 : 580,738.56 = 229,841.60 : x
  2. Step 2: Convert to fraction form
    420,828.20/580,738.56 = 229,841.60/x
  3. Step 3: Cross multiply
    420,828.20x = 580,738.56 × 229,841.60
  4. Step 4: Simplify right side
    420,828.20x = 133,477,879,812.10
  5. Step 5: Solve for x
    x = 133,477,879,812.10/420,828.20
  6. Step 6: Final answer
    x = 317,179.03

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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.