Finding the Fourth Proportional to 230,981.28, 318,664.71 and 135,453.12
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Solution
The fourth proportional to 230,981.28, 318,664.71 and 135,453.12 is: 186,872.85
Step by Step Solution
- Step 1: Write the proportion equation
230,981.28 : 318,664.71 = 135,453.12 : x - Step 2: Convert to fraction form
230,981.28/318,664.71 = 135,453.12/x - Step 3: Cross multiply
230,981.28x = 318,664.71 × 135,453.12 - Step 4: Simplify right side
230,981.28x = 43,164,129,203.40 - Step 5: Solve for x
x = 43,164,129,203.40/230,981.28 - Step 6: Final answer
x = 186,872.85
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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.