Finding the Fourth Proportional to 378,391.05, 522,177.08 and 208,625.18
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Solution
The fourth proportional to 378,391.05, 522,177.08 and 208,625.18 is: 287,901.32
Step by Step Solution
- Step 1: Write the proportion equation
378,391.05 : 522,177.08 = 208,625.18 : x - Step 2: Convert to fraction form
378,391.05/522,177.08 = 208,625.18/x - Step 3: Cross multiply
378,391.05x = 522,177.08 × 208,625.18 - Step 4: Simplify right side
378,391.05x = 108,939,283,652.86 - Step 5: Solve for x
x = 108,939,283,652.86/378,391.05 - Step 6: Final answer
x = 287,901.32
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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.