Finding the Fourth Proportional to 289,298.97, 399,228.12 and 161,979.12
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Solution
The fourth proportional to 289,298.97, 399,228.12 and 161,979.12 is: 223,528.69
Step by Step Solution
- Step 1: Write the proportion equation
289,298.97 : 399,228.12 = 161,979.12 : x - Step 2: Convert to fraction form
289,298.97/399,228.12 = 161,979.12/x - Step 3: Cross multiply
289,298.97x = 399,228.12 × 161,979.12 - Step 4: Simplify right side
289,298.97x = 64,666,619,556.85 - Step 5: Solve for x
x = 64,666,619,556.85/289,298.97 - Step 6: Final answer
x = 223,528.69
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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.