Finding the Fourth Proportional to 291,710.25, 437,639.18 and 81,348.21
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Solution
The fourth proportional to 291,710.25, 437,639.18 and 81,348.21 is: 122,042.90
Step by Step Solution
- Step 1: Write the proportion equation
291,710.25 : 437,639.18 = 81,348.21 : x - Step 2: Convert to fraction form
291,710.25/437,639.18 = 81,348.21/x - Step 3: Cross multiply
291,710.25x = 437,639.18 × 81,348.21 - Step 4: Simplify right side
291,710.25x = 35,601,163,512.13 - Step 5: Solve for x
x = 35,601,163,512.13/291,710.25 - Step 6: Final answer
x = 122,042.90
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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.