Home / 209,286.24-313,922.40-90,957.72

Finding the Fourth Proportional to 209,286.24, 313,922.40 and 90,957.72

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Solution

The fourth proportional to 209,286.24, 313,922.40 and 90,957.72 is: 136,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,286.24 : 313,922.40 = 90,957.72 : x
  2. Step 2: Convert to fraction form
    209,286.24/313,922.40 = 90,957.72/x
  3. Step 3: Cross multiply
    209,286.24x = 313,922.40 × 90,957.72
  4. Step 4: Simplify right side
    209,286.24x = 28,553,665,760.93
  5. Step 5: Solve for x
    x = 28,553,665,760.93/209,286.24
  6. Step 6: Final answer
    x = 136,433.56

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1.5x scale

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.