Home / 809,124.80-1,213,687.20-210,081.20

Finding the Fourth Proportional to 809,124.80, 1,213,687.20 and 210,081.20

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Solution

The fourth proportional to 809,124.80, 1,213,687.20 and 210,081.20 is: 315,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,124.80 : 1,213,687.20 = 210,081.20 : x
  2. Step 2: Convert to fraction form
    809,124.80/1,213,687.20 = 210,081.20/x
  3. Step 3: Cross multiply
    809,124.80x = 1,213,687.20 × 210,081.20
  4. Step 4: Simplify right side
    809,124.80x = 254,972,863,400.64
  5. Step 5: Solve for x
    x = 254,972,863,400.64/809,124.80
  6. Step 6: Final answer
    x = 315,121.80

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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.