Finding the Fourth Proportional to 251,998.79, 347,758.17 and 138,821.54
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Solution
The fourth proportional to 251,998.79, 347,758.17 and 138,821.54 is: 191,573.63
Step by Step Solution
- Step 1: Write the proportion equation
251,998.79 : 347,758.17 = 138,821.54 : x - Step 2: Convert to fraction form
251,998.79/347,758.17 = 138,821.54/x - Step 3: Cross multiply
251,998.79x = 347,758.17 × 138,821.54 - Step 4: Simplify right side
251,998.79x = 48,276,322,274.08 - Step 5: Solve for x
x = 48,276,322,274.08/251,998.79 - Step 6: Final answer
x = 191,573.63
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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.