Finding the Fourth Proportional to 239,514.05, 330,534.18 and 154,778.74
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Solution
The fourth proportional to 239,514.05, 330,534.18 and 154,778.74 is: 213,597.75
Step by Step Solution
- Step 1: Write the proportion equation
239,514.05 : 330,534.18 = 154,778.74 : x - Step 2: Convert to fraction form
239,514.05/330,534.18 = 154,778.74/x - Step 3: Cross multiply
239,514.05x = 330,534.18 × 154,778.74 - Step 4: Simplify right side
239,514.05x = 51,159,663,081.00 - Step 5: Solve for x
x = 51,159,663,081.00/239,514.05 - Step 6: Final answer
x = 213,597.75
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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.