Home / 259,412.30-389,236.67-133,141.21

Finding the Fourth Proportional to 259,412.30, 389,236.67 and 133,141.21

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Solution

The fourth proportional to 259,412.30, 389,236.67 and 133,141.21 is: 199,772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,412.30 : 389,236.67 = 133,141.21 : x
  2. Step 2: Convert to fraction form
    259,412.30/389,236.67 = 133,141.21/x
  3. Step 3: Cross multiply
    259,412.30x = 389,236.67 × 133,141.21
  4. Step 4: Simplify right side
    259,412.30x = 51,823,440,811.66
  5. Step 5: Solve for x
    x = 51,823,440,811.66/259,412.30
  6. Step 6: Final answer
    x = 199,772.49

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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.