Home / 257,391.17-355,198.79-144,213.65

Finding the Fourth Proportional to 257,391.17, 355,198.79 and 144,213.65

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Solution

The fourth proportional to 257,391.17, 355,198.79 and 144,213.65 is: 199,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,391.17 : 355,198.79 = 144,213.65 : x
  2. Step 2: Convert to fraction form
    257,391.17/355,198.79 = 144,213.65/x
  3. Step 3: Cross multiply
    257,391.17x = 355,198.79 × 144,213.65
  4. Step 4: Simplify right side
    257,391.17x = 51,224,511,484.42
  5. Step 5: Solve for x
    x = 51,224,511,484.42/257,391.17
  6. Step 6: Final answer
    x = 199,014.26

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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.