Home / 213,621.20-320,047.80-102,568.40

Finding the Fourth Proportional to 213,621.20, 320,047.80 and 102,568.40

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Solution

The fourth proportional to 213,621.20, 320,047.80 and 102,568.40 is: 153,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,621.20 : 320,047.80 = 102,568.40 : x
  2. Step 2: Convert to fraction form
    213,621.20/320,047.80 = 102,568.40/x
  3. Step 3: Cross multiply
    213,621.20x = 320,047.80 × 102,568.40
  4. Step 4: Simplify right side
    213,621.20x = 32,826,790,769.52
  5. Step 5: Solve for x
    x = 32,826,790,769.52/213,621.20
  6. Step 6: Final answer
    x = 153,668.23

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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.