Finding the Fourth Proportional to 216,670.76, 324,829.98 and 90,405.05
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Solution
The fourth proportional to 216,670.76, 324,829.98 and 90,405.05 is: 135,534.07
Step by Step Solution
- Step 1: Write the proportion equation
216,670.76 : 324,829.98 = 90,405.05 : x - Step 2: Convert to fraction form
216,670.76/324,829.98 = 90,405.05/x - Step 3: Cross multiply
216,670.76x = 324,829.98 × 90,405.05 - Step 4: Simplify right side
216,670.76x = 29,366,270,583.40 - Step 5: Solve for x
x = 29,366,270,583.40/216,670.76 - Step 6: Final answer
x = 135,534.07
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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.