Finding the Fourth Proportional to 253,699.84, 380,785.92 and 129,134.08
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Solution
The fourth proportional to 253,699.84, 380,785.92 and 129,134.08 is: 193,821.33
Step by Step Solution
- Step 1: Write the proportion equation
253,699.84 : 380,785.92 = 129,134.08 : x - Step 2: Convert to fraction form
253,699.84/380,785.92 = 129,134.08/x - Step 3: Cross multiply
253,699.84x = 380,785.92 × 129,134.08 - Step 4: Simplify right side
253,699.84x = 49,172,439,456.15 - Step 5: Solve for x
x = 49,172,439,456.15/253,699.84 - Step 6: Final answer
x = 193,821.33
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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.