Finding the Fourth Proportional to 312,531.32, 431,293.74 and 169,292.54
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Solution
The fourth proportional to 312,531.32, 431,293.74 and 169,292.54 is: 233,623.99
Step by Step Solution
- Step 1: Write the proportion equation
312,531.32 : 431,293.74 = 169,292.54 : x - Step 2: Convert to fraction form
312,531.32/431,293.74 = 169,292.54/x - Step 3: Cross multiply
312,531.32x = 431,293.74 × 169,292.54 - Step 4: Simplify right side
312,531.32x = 73,014,812,730.70 - Step 5: Solve for x
x = 73,014,812,730.70/312,531.32 - Step 6: Final answer
x = 233,623.99
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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.