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Finding the Fourth Proportional to 617,039.21, 925,674.67 and 280,103.51

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Solution

The fourth proportional to 617,039.21, 925,674.67 and 280,103.51 is: 420,207.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,039.21 : 925,674.67 = 280,103.51 : x
  2. Step 2: Convert to fraction form
    617,039.21/925,674.67 = 280,103.51/x
  3. Step 3: Cross multiply
    617,039.21x = 925,674.67 × 280,103.51
  4. Step 4: Simplify right side
    617,039.21x = 259,284,719,556.72
  5. Step 5: Solve for x
    x = 259,284,719,556.72/617,039.21
  6. Step 6: Final answer
    x = 420,207.85

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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.