Finding the Fourth Proportional to 216,517.80, 324,813.96 and 74,356.32
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Solution
The fourth proportional to 216,517.80, 324,813.96 and 74,356.32 is: 111,547.28
Step by Step Solution
- Step 1: Write the proportion equation
216,517.80 : 324,813.96 = 74,356.32 : x - Step 2: Convert to fraction form
216,517.80/324,813.96 = 74,356.32/x - Step 3: Cross multiply
216,517.80x = 324,813.96 × 74,356.32 - Step 4: Simplify right side
216,517.80x = 24,151,970,750.23 - Step 5: Solve for x
x = 24,151,970,750.23/216,517.80 - Step 6: Final answer
x = 111,547.28
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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.