Finding the Fourth Proportional to 225,424.43, 311,010.19 and 129,929.07
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Solution
The fourth proportional to 225,424.43, 311,010.19 and 129,929.07 is: 179,258.59
Step by Step Solution
- Step 1: Write the proportion equation
225,424.43 : 311,010.19 = 129,929.07 : x - Step 2: Convert to fraction form
225,424.43/311,010.19 = 129,929.07/x - Step 3: Cross multiply
225,424.43x = 311,010.19 × 129,929.07 - Step 4: Simplify right side
225,424.43x = 40,409,264,422.40 - Step 5: Solve for x
x = 40,409,264,422.40/225,424.43 - Step 6: Final answer
x = 179,258.59
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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.