Finding the Fourth Proportional to 312,659.62, 431,471.77 and 169,419.93
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Solution
The fourth proportional to 312,659.62, 431,471.77 and 169,419.93 is: 233,800.31
Step by Step Solution
- Step 1: Write the proportion equation
312,659.62 : 431,471.77 = 169,419.93 : x - Step 2: Convert to fraction form
312,659.62/431,471.77 = 169,419.93/x - Step 3: Cross multiply
312,659.62x = 431,471.77 × 169,419.93 - Step 4: Simplify right side
312,659.62x = 73,099,917,070.38 - Step 5: Solve for x
x = 73,099,917,070.38/312,659.62 - Step 6: Final answer
x = 233,800.31
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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.