Finding the Fourth Proportional to 397,428.06, 548,445.42 and 216,136.08
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Solution
The fourth proportional to 397,428.06, 548,445.42 and 216,136.08 is: 298,264.91
Step by Step Solution
- Step 1: Write the proportion equation
397,428.06 : 548,445.42 = 216,136.08 : x - Step 2: Convert to fraction form
397,428.06/548,445.42 = 216,136.08/x - Step 3: Cross multiply
397,428.06x = 548,445.42 × 216,136.08 - Step 4: Simplify right side
397,428.06x = 118,538,843,172.75 - Step 5: Solve for x
x = 118,538,843,172.75/397,428.06 - Step 6: Final answer
x = 298,264.91
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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.