Finding the Fourth Proportional to 225,455.55, 311,057.87 and 129,948.99
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Solution
The fourth proportional to 225,455.55, 311,057.87 and 129,948.99 is: 179,288.80
Step by Step Solution
- Step 1: Write the proportion equation
225,455.55 : 311,057.87 = 129,948.99 : x - Step 2: Convert to fraction form
225,455.55/311,057.87 = 129,948.99/x - Step 3: Cross multiply
225,455.55x = 311,057.87 × 129,948.99 - Step 4: Simplify right side
225,455.55x = 40,421,655,388.31 - Step 5: Solve for x
x = 40,421,655,388.31/225,455.55 - Step 6: Final answer
x = 179,288.80
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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.