Finding the Fourth Proportional to 289,258.12, 399,190.98 and 161,926.12
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Solution
The fourth proportional to 289,258.12, 399,190.98 and 161,926.12 is: 223,466.32
Step by Step Solution
- Step 1: Write the proportion equation
289,258.12 : 399,190.98 = 161,926.12 : x - Step 2: Convert to fraction form
289,258.12/399,190.98 = 161,926.12/x - Step 3: Cross multiply
289,258.12x = 399,190.98 × 161,926.12 - Step 4: Simplify right side
289,258.12x = 64,639,446,530.40 - Step 5: Solve for x
x = 64,639,446,530.40/289,258.12 - Step 6: Final answer
x = 223,466.32
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1.5x scale
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.