Finding the Fourth Proportional to 318,416.99, 439,232.96 and 198,977.63
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Solution
The fourth proportional to 318,416.99, 439,232.96 and 198,977.63 is: 274,475.09
Step by Step Solution
- Step 1: Write the proportion equation
318,416.99 : 439,232.96 = 198,977.63 : x - Step 2: Convert to fraction form
318,416.99/439,232.96 = 198,977.63/x - Step 3: Cross multiply
318,416.99x = 439,232.96 × 198,977.63 - Step 4: Simplify right side
318,416.99x = 87,397,531,699.96 - Step 5: Solve for x
x = 87,397,531,699.96/318,416.99 - Step 6: Final answer
x = 274,475.09
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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.