Finding the Fourth Proportional to 299,990.25, 450,206.91 and 142,219.26
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Solution
The fourth proportional to 299,990.25, 450,206.91 and 142,219.26 is: 213,433.92
Step by Step Solution
- Step 1: Write the proportion equation
299,990.25 : 450,206.91 = 142,219.26 : x - Step 2: Convert to fraction form
299,990.25/450,206.91 = 142,219.26/x - Step 3: Cross multiply
299,990.25x = 450,206.91 × 142,219.26 - Step 4: Simplify right side
299,990.25x = 64,028,093,587.09 - Step 5: Solve for x
x = 64,028,093,587.09/299,990.25 - Step 6: Final answer
x = 213,433.92
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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.