Finding the Fourth Proportional to 378,119.13, 521,815.53 and 208,364.19
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Solution
The fourth proportional to 378,119.13, 521,815.53 and 208,364.19 is: 287,548.72
Step by Step Solution
- Step 1: Write the proportion equation
378,119.13 : 521,815.53 = 208,364.19 : x - Step 2: Convert to fraction form
378,119.13/521,815.53 = 208,364.19/x - Step 3: Cross multiply
378,119.13x = 521,815.53 × 208,364.19 - Step 4: Simplify right side
378,119.13x = 108,727,670,237.87 - Step 5: Solve for x
x = 108,727,670,237.87/378,119.13 - Step 6: Final answer
x = 287,548.72
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1.5x scale
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.