Home / 259,328.70-388,771.14-99,519.30

Finding the Fourth Proportional to 259,328.70, 388,771.14 and 99,519.30

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Solution

The fourth proportional to 259,328.70, 388,771.14 and 99,519.30 is: 149,193.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,328.70 : 388,771.14 = 99,519.30 : x
  2. Step 2: Convert to fraction form
    259,328.70/388,771.14 = 99,519.30/x
  3. Step 3: Cross multiply
    259,328.70x = 388,771.14 × 99,519.30
  4. Step 4: Simplify right side
    259,328.70x = 38,690,231,713.00
  5. Step 5: Solve for x
    x = 38,690,231,713.00/259,328.70
  6. Step 6: Final answer
    x = 149,193.79

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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.