Finding the Fourth Proportional to 207,817.30, 286,787.55 and 122,934.70
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Solution
The fourth proportional to 207,817.30, 286,787.55 and 122,934.70 is: 169,649.69
Step by Step Solution
- Step 1: Write the proportion equation
207,817.30 : 286,787.55 = 122,934.70 : x - Step 2: Convert to fraction form
207,817.30/286,787.55 = 122,934.70/x - Step 3: Cross multiply
207,817.30x = 286,787.55 × 122,934.70 - Step 4: Simplify right side
207,817.30x = 35,256,141,422.99 - Step 5: Solve for x
x = 35,256,141,422.99/207,817.30 - Step 6: Final answer
x = 169,649.69
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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.