Finding the Fourth Proportional to 221,042.82, 331,628.91 and 71,280.09
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Solution
The fourth proportional to 221,042.82, 331,628.91 and 71,280.09 is: 106,940.99
Step by Step Solution
- Step 1: Write the proportion equation
221,042.82 : 331,628.91 = 71,280.09 : x - Step 2: Convert to fraction form
221,042.82/331,628.91 = 71,280.09/x - Step 3: Cross multiply
221,042.82x = 331,628.91 × 71,280.09 - Step 4: Simplify right side
221,042.82x = 23,638,538,551.40 - Step 5: Solve for x
x = 23,638,538,551.40/221,042.82 - Step 6: Final answer
x = 106,940.99
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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.