Finding the Fourth Proportional to 312,415.20, 431,135.02 and 169,175.25
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Solution
The fourth proportional to 312,415.20, 431,135.02 and 169,175.25 is: 233,462.95
Step by Step Solution
- Step 1: Write the proportion equation
312,415.20 : 431,135.02 = 169,175.25 : x - Step 2: Convert to fraction form
312,415.20/431,135.02 = 169,175.25/x - Step 3: Cross multiply
312,415.20x = 431,135.02 × 169,175.25 - Step 4: Simplify right side
312,415.20x = 72,937,374,792.26 - Step 5: Solve for x
x = 72,937,374,792.26/312,415.20 - Step 6: Final answer
x = 233,462.95
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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.