Finding the Fourth Proportional to 311,719.68, 429,886.17 and 196,798.68
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Solution
The fourth proportional to 311,719.68, 429,886.17 and 196,798.68 is: 271,400.99
Step by Step Solution
- Step 1: Write the proportion equation
311,719.68 : 429,886.17 = 196,798.68 : x - Step 2: Convert to fraction form
311,719.68/429,886.17 = 196,798.68/x - Step 3: Cross multiply
311,719.68x = 429,886.17 × 196,798.68 - Step 4: Simplify right side
311,719.68x = 84,601,030,806.26 - Step 5: Solve for x
x = 84,601,030,806.26/311,719.68 - Step 6: Final answer
x = 271,400.99
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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.