Finding the Fourth Proportional to 216,878.30, 299,292.01 and 121,384.99
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Solution
The fourth proportional to 216,878.30, 299,292.01 and 121,384.99 is: 167,511.26
Step by Step Solution
- Step 1: Write the proportion equation
216,878.30 : 299,292.01 = 121,384.99 : x - Step 2: Convert to fraction form
216,878.30/299,292.01 = 121,384.99/x - Step 3: Cross multiply
216,878.30x = 299,292.01 × 121,384.99 - Step 4: Simplify right side
216,878.30x = 36,329,557,640.93 - Step 5: Solve for x
x = 36,329,557,640.93/216,878.30 - Step 6: Final answer
x = 167,511.26
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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.