Home / 319,140.24-440,305.92-198,238.56

Finding the Fourth Proportional to 319,140.24, 440,305.92 and 198,238.56

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Solution

The fourth proportional to 319,140.24, 440,305.92 and 198,238.56 is: 273,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,140.24 : 440,305.92 = 198,238.56 : x
  2. Step 2: Convert to fraction form
    319,140.24/440,305.92 = 198,238.56/x
  3. Step 3: Cross multiply
    319,140.24x = 440,305.92 × 198,238.56
  4. Step 4: Simplify right side
    319,140.24x = 87,285,611,540.28
  5. Step 5: Solve for x
    x = 87,285,611,540.28/319,140.24
  6. Step 6: Final answer
    x = 273,502.37

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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.