Finding the Fourth Proportional to 303,691.20, 455,536.80 and 135,211.20
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Solution
The fourth proportional to 303,691.20, 455,536.80 and 135,211.20 is: 202,816.80
Step by Step Solution
- Step 1: Write the proportion equation
303,691.20 : 455,536.80 = 135,211.20 : x - Step 2: Convert to fraction form
303,691.20/455,536.80 = 135,211.20/x - Step 3: Cross multiply
303,691.20x = 455,536.80 × 135,211.20 - Step 4: Simplify right side
303,691.20x = 61,593,677,372.16 - Step 5: Solve for x
x = 61,593,677,372.16/303,691.20 - Step 6: Final answer
x = 202,816.80
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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.