Finding the Fourth Proportional to 178,919.16, 246,931.76 and 115,441.62
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Solution
The fourth proportional to 178,919.16, 246,931.76 and 115,441.62 is: 159,324.48
Step by Step Solution
- Step 1: Write the proportion equation
178,919.16 : 246,931.76 = 115,441.62 : x - Step 2: Convert to fraction form
178,919.16/246,931.76 = 115,441.62/x - Step 3: Cross multiply
178,919.16x = 246,931.76 × 115,441.62 - Step 4: Simplify right side
178,919.16x = 28,506,202,403.85 - Step 5: Solve for x
x = 28,506,202,403.85/178,919.16 - Step 6: Final answer
x = 159,324.48
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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.