Finding the Fourth Proportional to 312,557.42, 431,328.70 and 169,321.07
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Solution
The fourth proportional to 312,557.42, 431,328.70 and 169,321.07 is: 233,662.78
Step by Step Solution
- Step 1: Write the proportion equation
312,557.42 : 431,328.70 = 169,321.07 : x - Step 2: Convert to fraction form
312,557.42/431,328.70 = 169,321.07/x - Step 3: Cross multiply
312,557.42x = 431,328.70 × 169,321.07 - Step 4: Simplify right side
312,557.42x = 73,033,037,005.71 - Step 5: Solve for x
x = 73,033,037,005.71/312,557.42 - Step 6: Final answer
x = 233,662.78
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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.