Finding the Fourth Proportional to 217,243.17, 299,807.42 and 121,780.53
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Solution
The fourth proportional to 217,243.17, 299,807.42 and 121,780.53 is: 168,063.77
Step by Step Solution
- Step 1: Write the proportion equation
217,243.17 : 299,807.42 = 121,780.53 : x - Step 2: Convert to fraction form
217,243.17/299,807.42 = 121,780.53/x - Step 3: Cross multiply
217,243.17x = 299,807.42 × 121,780.53 - Step 4: Simplify right side
217,243.17x = 36,510,705,896.63 - Step 5: Solve for x
x = 36,510,705,896.63/217,243.17 - Step 6: Final answer
x = 168,063.77
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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.