Finding the Fourth Proportional to 208,998.20, 313,574.10 and 84,351.80
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Solution
The fourth proportional to 208,998.20, 313,574.10 and 84,351.80 is: 126,558.70
Step by Step Solution
- Step 1: Write the proportion equation
208,998.20 : 313,574.10 = 84,351.80 : x - Step 2: Convert to fraction form
208,998.20/313,574.10 = 84,351.80/x - Step 3: Cross multiply
208,998.20x = 313,574.10 × 84,351.80 - Step 4: Simplify right side
208,998.20x = 26,450,539,768.38 - Step 5: Solve for x
x = 26,450,539,768.38/208,998.20 - Step 6: Final answer
x = 126,558.70
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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.