Finding the Fourth Proportional to 310,323.75, 428,247.18 and 176,187.75
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Solution
The fourth proportional to 310,323.75, 428,247.18 and 176,187.75 is: 243,139.32
Step by Step Solution
- Step 1: Write the proportion equation
310,323.75 : 428,247.18 = 176,187.75 : x - Step 2: Convert to fraction form
310,323.75/428,247.18 = 176,187.75/x - Step 3: Cross multiply
310,323.75x = 428,247.18 × 176,187.75 - Step 4: Simplify right side
310,323.75x = 75,451,907,088.05 - Step 5: Solve for x
x = 75,451,907,088.05/310,323.75 - Step 6: Final answer
x = 243,139.32
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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.