Finding the Fourth Proportional to 225,886.13, 311,717.25 and 129,083.84
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Solution
The fourth proportional to 225,886.13, 311,717.25 and 129,083.84 is: 178,132.49
Step by Step Solution
- Step 1: Write the proportion equation
225,886.13 : 311,717.25 = 129,083.84 : x - Step 2: Convert to fraction form
225,886.13/311,717.25 = 129,083.84/x - Step 3: Cross multiply
225,886.13x = 311,717.25 × 129,083.84 - Step 4: Simplify right side
225,886.13x = 40,237,658,065.65 - Step 5: Solve for x
x = 40,237,658,065.65/225,886.13 - Step 6: Final answer
x = 178,132.49
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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.