Finding the Fourth Proportional to 221,012.26, 304,998.16 and 129,136.94
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Solution
The fourth proportional to 221,012.26, 304,998.16 and 129,136.94 is: 178,209.70
Step by Step Solution
- Step 1: Write the proportion equation
221,012.26 : 304,998.16 = 129,136.94 : x - Step 2: Convert to fraction form
221,012.26/304,998.16 = 129,136.94/x - Step 3: Cross multiply
221,012.26x = 304,998.16 × 129,136.94 - Step 4: Simplify right side
221,012.26x = 39,386,529,088.03 - Step 5: Solve for x
x = 39,386,529,088.03/221,012.26 - Step 6: Final answer
x = 178,209.70
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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.