Finding the Fourth Proportional to 378,130.77, 521,797.01 and 216,999.09
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Solution
The fourth proportional to 378,130.77, 521,797.01 and 216,999.09 is: 299,445.28
Step by Step Solution
- Step 1: Write the proportion equation
378,130.77 : 521,797.01 = 216,999.09 : x - Step 2: Convert to fraction form
378,130.77/521,797.01 = 216,999.09/x - Step 3: Cross multiply
378,130.77x = 521,797.01 × 216,999.09 - Step 4: Simplify right side
378,130.77x = 113,229,475,249.73 - Step 5: Solve for x
x = 113,229,475,249.73/378,130.77 - Step 6: Final answer
x = 299,445.28
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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.