Finding the Fourth Proportional to 291,691.20, 437,536.80 and 197,212.80
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Solution
The fourth proportional to 291,691.20, 437,536.80 and 197,212.80 is: 295,819.20
Step by Step Solution
- Step 1: Write the proportion equation
291,691.20 : 437,536.80 = 197,212.80 : x - Step 2: Convert to fraction form
291,691.20/437,536.80 = 197,212.80/x - Step 3: Cross multiply
291,691.20x = 437,536.80 × 197,212.80 - Step 4: Simplify right side
291,691.20x = 86,287,857,431.04 - Step 5: Solve for x
x = 86,287,857,431.04/291,691.20 - Step 6: Final answer
x = 295,819.20
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1.5x scale
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.