Finding the Fourth Proportional to 220,202.87, 303,865.56 and 129,541.32
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Solution
The fourth proportional to 220,202.87, 303,865.56 and 129,541.32 is: 178,758.55
Step by Step Solution
- Step 1: Write the proportion equation
220,202.87 : 303,865.56 = 129,541.32 : x - Step 2: Convert to fraction form
220,202.87/303,865.56 = 129,541.32/x - Step 3: Cross multiply
220,202.87x = 303,865.56 × 129,541.32 - Step 4: Simplify right side
220,202.87x = 39,363,145,744.94 - Step 5: Solve for x
x = 39,363,145,744.94/220,202.87 - Step 6: Final answer
x = 178,758.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.