Finding the Fourth Proportional to 289,246.12, 399,156.60 and 161,922.76
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Solution
The fourth proportional to 289,246.12, 399,156.60 and 161,922.76 is: 223,451.70
Step by Step Solution
- Step 1: Write the proportion equation
289,246.12 : 399,156.60 = 161,922.76 : x - Step 2: Convert to fraction form
289,246.12/399,156.60 = 161,922.76/x - Step 3: Cross multiply
289,246.12x = 399,156.60 × 161,922.76 - Step 4: Simplify right side
289,246.12x = 64,632,538,344.22 - Step 5: Solve for x
x = 64,632,538,344.22/289,246.12 - Step 6: Final answer
x = 223,451.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.