Finding the Fourth Proportional to 311,079.79, 466,619.42 and 86,440.12
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Solution
The fourth proportional to 311,079.79, 466,619.42 and 86,440.12 is: 129,660.11
Step by Step Solution
- Step 1: Write the proportion equation
311,079.79 : 466,619.42 = 86,440.12 : x - Step 2: Convert to fraction form
311,079.79/466,619.42 = 86,440.12/x - Step 3: Cross multiply
311,079.79x = 466,619.42 × 86,440.12 - Step 4: Simplify right side
311,079.79x = 40,334,638,659.13 - Step 5: Solve for x
x = 40,334,638,659.13/311,079.79 - Step 6: Final answer
x = 129,660.11
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.