Home / 259,945.15-389,914.63-82,453.70

Finding the Fourth Proportional to 259,945.15, 389,914.63 and 82,453.70

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Solution

The fourth proportional to 259,945.15, 389,914.63 and 82,453.70 is: 123,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,945.15 : 389,914.63 = 82,453.70 : x
  2. Step 2: Convert to fraction form
    259,945.15/389,914.63 = 82,453.70/x
  3. Step 3: Cross multiply
    259,945.15x = 389,914.63 × 82,453.70
  4. Step 4: Simplify right side
    259,945.15x = 32,149,903,927.63
  5. Step 5: Solve for x
    x = 32,149,903,927.63/259,945.15
  6. Step 6: Final answer
    x = 123,679.57

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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.