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Finding the Fourth Proportional to 339,993.99, 509,005.53 and 256,107.33

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Solution

The fourth proportional to 339,993.99, 509,005.53 and 256,107.33 is: 383,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,993.99 : 509,005.53 = 256,107.33 : x
  2. Step 2: Convert to fraction form
    339,993.99/509,005.53 = 256,107.33/x
  3. Step 3: Cross multiply
    339,993.99x = 509,005.53 × 256,107.33
  4. Step 4: Simplify right side
    339,993.99x = 130,360,047,243.54
  5. Step 5: Solve for x
    x = 130,360,047,243.54/339,993.99
  6. Step 6: Final answer
    x = 383,418.68

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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.