Finding the Fourth Proportional to 312,327.40, 431,011.86 and 169,088.62
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Solution
The fourth proportional to 312,327.40, 431,011.86 and 169,088.62 is: 233,342.32
Step by Step Solution
- Step 1: Write the proportion equation
312,327.40 : 431,011.86 = 169,088.62 : x - Step 2: Convert to fraction form
312,327.40/431,011.86 = 169,088.62/x - Step 3: Cross multiply
312,327.40x = 431,011.86 × 169,088.62 - Step 4: Simplify right side
312,327.40x = 72,879,200,611.03 - Step 5: Solve for x
x = 72,879,200,611.03/312,327.40 - Step 6: Final answer
x = 233,342.32
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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.