Finding the Fourth Proportional to 287,696.12, 431,543.58 and 77,334.08
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Solution
The fourth proportional to 287,696.12, 431,543.58 and 77,334.08 is: 116,000.96
Step by Step Solution
- Step 1: Write the proportion equation
287,696.12 : 431,543.58 = 77,334.08 : x - Step 2: Convert to fraction form
287,696.12/431,543.58 = 77,334.08/x - Step 3: Cross multiply
287,696.12x = 431,543.58 × 77,334.08 - Step 4: Simplify right side
287,696.12x = 33,373,025,739.21 - Step 5: Solve for x
x = 33,373,025,739.21/287,696.12 - Step 6: Final answer
x = 116,000.96
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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.