Finding the Fourth Proportional to 212,228.25, 292,916.58 and 121,644.93
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Solution
The fourth proportional to 212,228.25, 292,916.58 and 121,644.93 is: 167,893.84
Step by Step Solution
- Step 1: Write the proportion equation
212,228.25 : 292,916.58 = 121,644.93 : x - Step 2: Convert to fraction form
212,228.25/292,916.58 = 121,644.93/x - Step 3: Cross multiply
212,228.25x = 292,916.58 × 121,644.93 - Step 4: Simplify right side
212,228.25x = 35,631,816,869.94 - Step 5: Solve for x
x = 35,631,816,869.94/212,228.25 - Step 6: Final answer
x = 167,893.84
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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.