Finding the Fourth Proportional to 378,177.64, 521,896.08 and 208,422.70
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Solution
The fourth proportional to 378,177.64, 521,896.08 and 208,422.70 is: 287,629.35
Step by Step Solution
- Step 1: Write the proportion equation
378,177.64 : 521,896.08 = 208,422.70 : x - Step 2: Convert to fraction form
378,177.64/521,896.08 = 208,422.70/x - Step 3: Cross multiply
378,177.64x = 521,896.08 × 208,422.70 - Step 4: Simplify right side
378,177.64x = 108,774,990,113.02 - Step 5: Solve for x
x = 108,774,990,113.02/378,177.64 - Step 6: Final answer
x = 287,629.35
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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.