Finding the Fourth Proportional to 303,715.20, 455,572.80 and 135,235.20
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Solution
The fourth proportional to 303,715.20, 455,572.80 and 135,235.20 is: 202,852.80
Step by Step Solution
- Step 1: Write the proportion equation
303,715.20 : 455,572.80 = 135,235.20 : x - Step 2: Convert to fraction form
303,715.20/455,572.80 = 135,235.20/x - Step 3: Cross multiply
303,715.20x = 455,572.80 × 135,235.20 - Step 4: Simplify right side
303,715.20x = 61,609,478,722.56 - Step 5: Solve for x
x = 61,609,478,722.56/303,715.20 - Step 6: Final answer
x = 202,852.80
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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.