Finding the Fourth Proportional to 216,432.80, 324,684.74 and 66,669.81
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Solution
The fourth proportional to 216,432.80, 324,684.74 and 66,669.81 is: 100,015.66
Step by Step Solution
- Step 1: Write the proportion equation
216,432.80 : 324,684.74 = 66,669.81 : x - Step 2: Convert to fraction form
216,432.80/324,684.74 = 66,669.81/x - Step 3: Cross multiply
216,432.80x = 324,684.74 × 66,669.81 - Step 4: Simplify right side
216,432.80x = 21,646,668,499.79 - Step 5: Solve for x
x = 21,646,668,499.79/216,432.80 - Step 6: Final answer
x = 100,015.66
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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.