Finding the Fourth Proportional to 308,351.13, 425,655.74 and 187,531.23
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Solution
The fourth proportional to 308,351.13, 425,655.74 and 187,531.23 is: 258,872.88
Step by Step Solution
- Step 1: Write the proportion equation
308,351.13 : 425,655.74 = 187,531.23 : x - Step 2: Convert to fraction form
308,351.13/425,655.74 = 187,531.23/x - Step 3: Cross multiply
308,351.13x = 425,655.74 × 187,531.23 - Step 4: Simplify right side
308,351.13x = 79,823,743,541.10 - Step 5: Solve for x
x = 79,823,743,541.10/308,351.13 - Step 6: Final answer
x = 258,872.88
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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.