Finding the Fourth Proportional to 218,877.68, 328,075.94 and 85,733.12
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Solution
The fourth proportional to 218,877.68, 328,075.94 and 85,733.12 is: 128,505.45
Step by Step Solution
- Step 1: Write the proportion equation
218,877.68 : 328,075.94 = 85,733.12 : x - Step 2: Convert to fraction form
218,877.68/328,075.94 = 85,733.12/x - Step 3: Cross multiply
218,877.68x = 328,075.94 × 85,733.12 - Step 4: Simplify right side
218,877.68x = 28,126,973,933.13 - Step 5: Solve for x
x = 28,126,973,933.13/218,877.68 - Step 6: Final answer
x = 128,505.45
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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.