Finding the Fourth Proportional to 312,477.18, 431,216.35 and 169,233.94
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Solution
The fourth proportional to 312,477.18, 431,216.35 and 169,233.94 is: 233,541.67
Step by Step Solution
- Step 1: Write the proportion equation
312,477.18 : 431,216.35 = 169,233.94 : x - Step 2: Convert to fraction form
312,477.18/431,216.35 = 169,233.94/x - Step 3: Cross multiply
312,477.18x = 431,216.35 × 169,233.94 - Step 4: Simplify right side
312,477.18x = 72,976,441,902.92 - Step 5: Solve for x
x = 72,976,441,902.92/312,477.18 - Step 6: Final answer
x = 233,541.67
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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.