Finding the Fourth Proportional to 312,634.02, 431,432.10 and 169,393.62
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Solution
The fourth proportional to 312,634.02, 431,432.10 and 169,393.62 is: 233,761.65
Step by Step Solution
- Step 1: Write the proportion equation
312,634.02 : 431,432.10 = 169,393.62 : x - Step 2: Convert to fraction form
312,634.02/431,432.10 = 169,393.62/x - Step 3: Cross multiply
312,634.02x = 431,432.10 × 169,393.62 - Step 4: Simplify right side
312,634.02x = 73,081,845,203.20 - Step 5: Solve for x
x = 73,081,845,203.20/312,634.02 - Step 6: Final answer
x = 233,761.65
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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.