Finding the Fourth Proportional to 311,720.68, 429,887.55 and 196,799.68
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Solution
The fourth proportional to 311,720.68, 429,887.55 and 196,799.68 is: 271,402.37
Step by Step Solution
- Step 1: Write the proportion equation
311,720.68 : 429,887.55 = 196,799.68 : x - Step 2: Convert to fraction form
311,720.68/429,887.55 = 196,799.68/x - Step 3: Cross multiply
311,720.68x = 429,887.55 × 196,799.68 - Step 4: Simplify right side
311,720.68x = 84,601,732,275.98 - Step 5: Solve for x
x = 84,601,732,275.98/311,720.68 - Step 6: Final answer
x = 271,402.37
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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.