Home / 331,145.20-457,120.83-223,860.70

Finding the Fourth Proportional to 331,145.20, 457,120.83 and 223,860.70

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Solution

The fourth proportional to 331,145.20, 457,120.83 and 223,860.70 is: 309,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,145.20 : 457,120.83 = 223,860.70 : x
  2. Step 2: Convert to fraction form
    331,145.20/457,120.83 = 223,860.70/x
  3. Step 3: Cross multiply
    331,145.20x = 457,120.83 × 223,860.70
  4. Step 4: Simplify right side
    331,145.20x = 102,331,388,988.38
  5. Step 5: Solve for x
    x = 102,331,388,988.38/331,145.20
  6. Step 6: Final answer
    x = 309,022.72

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1.5x scale

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.