Finding the Fourth Proportional to 306,303.18, 422,636.46 and 178,954.20
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Solution
The fourth proportional to 306,303.18, 422,636.46 and 178,954.20 is: 246,920.62
Step by Step Solution
- Step 1: Write the proportion equation
306,303.18 : 422,636.46 = 178,954.20 : x - Step 2: Convert to fraction form
306,303.18/422,636.46 = 178,954.20/x - Step 3: Cross multiply
306,303.18x = 422,636.46 × 178,954.20 - Step 4: Simplify right side
306,303.18x = 75,632,569,590.13 - Step 5: Solve for x
x = 75,632,569,590.13/306,303.18 - Step 6: Final answer
x = 246,920.62
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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.