Finding the Fourth Proportional to 312,449.22, 431,177.64 and 169,205.94
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Solution
The fourth proportional to 312,449.22, 431,177.64 and 169,205.94 is: 233,502.96
Step by Step Solution
- Step 1: Write the proportion equation
312,449.22 : 431,177.64 = 169,205.94 : x - Step 2: Convert to fraction form
312,449.22/431,177.64 = 169,205.94/x - Step 3: Cross multiply
312,449.22x = 431,177.64 × 169,205.94 - Step 4: Simplify right side
312,449.22x = 72,957,817,883.18 - Step 5: Solve for x
x = 72,957,817,883.18/312,449.22 - Step 6: Final answer
x = 233,502.96
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1.5x scale
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.