Finding the Fourth Proportional to 378,261.36, 521,910.36 and 214,881.84
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Solution
The fourth proportional to 378,261.36, 521,910.36 and 214,881.84 is: 296,485.63
Step by Step Solution
- Step 1: Write the proportion equation
378,261.36 : 521,910.36 = 214,881.84 : x - Step 2: Convert to fraction form
378,261.36/521,910.36 = 214,881.84/x - Step 3: Cross multiply
378,261.36x = 521,910.36 × 214,881.84 - Step 4: Simplify right side
378,261.36x = 112,149,058,471.86 - Step 5: Solve for x
x = 112,149,058,471.86/378,261.36 - Step 6: Final answer
x = 296,485.63
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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.