Finding the Fourth Proportional to 279,431.08, 418,911.51 and 121,540.61
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Solution
The fourth proportional to 279,431.08, 418,911.51 and 121,540.61 is: 182,208.65
Step by Step Solution
- Step 1: Write the proportion equation
279,431.08 : 418,911.51 = 121,540.61 : x - Step 2: Convert to fraction form
279,431.08/418,911.51 = 121,540.61/x - Step 3: Cross multiply
279,431.08x = 418,911.51 × 121,540.61 - Step 4: Simplify right side
279,431.08x = 50,914,760,461.42 - Step 5: Solve for x
x = 50,914,760,461.42/279,431.08 - Step 6: Final answer
x = 182,208.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.