Finding the Fourth Proportional to 312,502.05, 431,252.10 and 169,262.46
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Solution
The fourth proportional to 312,502.05, 431,252.10 and 169,262.46 is: 233,581.80
Step by Step Solution
- Step 1: Write the proportion equation
312,502.05 : 431,252.10 = 169,262.46 : x - Step 2: Convert to fraction form
312,502.05/431,252.10 = 169,262.46/x - Step 3: Cross multiply
312,502.05x = 431,252.10 × 169,262.46 - Step 4: Simplify right side
312,502.05x = 72,994,791,326.17 - Step 5: Solve for x
x = 72,994,791,326.17/312,502.05 - Step 6: Final answer
x = 233,581.80
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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.