Finding the Fourth Proportional to 218,619.97, 328,116.88 and 85,593.65
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Solution
The fourth proportional to 218,619.97, 328,116.88 and 85,593.65 is: 128,463.65
Step by Step Solution
- Step 1: Write the proportion equation
218,619.97 : 328,116.88 = 85,593.65 : x - Step 2: Convert to fraction form
218,619.97/328,116.88 = 85,593.65/x - Step 3: Cross multiply
218,619.97x = 328,116.88 × 85,593.65 - Step 4: Simplify right side
218,619.97x = 28,084,719,317.26 - Step 5: Solve for x
x = 28,084,719,317.26/218,619.97 - Step 6: Final answer
x = 128,463.65
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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.