Finding the Fourth Proportional to 279,434.70, 418,916.97 and 121,544.28
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Solution
The fourth proportional to 279,434.70, 418,916.97 and 121,544.28 is: 182,214.17
Step by Step Solution
- Step 1: Write the proportion equation
279,434.70 : 418,916.97 = 121,544.28 : x - Step 2: Convert to fraction form
279,434.70/418,916.97 = 121,544.28/x - Step 3: Cross multiply
279,434.70x = 418,916.97 × 121,544.28 - Step 4: Simplify right side
279,434.70x = 50,916,961,498.43 - Step 5: Solve for x
x = 50,916,961,498.43/279,434.70 - Step 6: Final answer
x = 182,214.17
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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.