Finding the Fourth Proportional to 303,756.40, 455,197.20 and 135,138.70
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Solution
The fourth proportional to 303,756.40, 455,197.20 and 135,138.70 is: 202,513.45
Step by Step Solution
- Step 1: Write the proportion equation
303,756.40 : 455,197.20 = 135,138.70 : x - Step 2: Convert to fraction form
303,756.40/455,197.20 = 135,138.70/x - Step 3: Cross multiply
303,756.40x = 455,197.20 × 135,138.70 - Step 4: Simplify right side
303,756.40x = 61,514,757,851.64 - Step 5: Solve for x
x = 61,514,757,851.64/303,756.40 - Step 6: Final answer
x = 202,513.45
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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.