Finding the Fourth Proportional to 201,796.84, 278,512.86 and 153,959.80
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Solution
The fourth proportional to 201,796.84, 278,512.86 and 153,959.80 is: 212,489.87
Step by Step Solution
- Step 1: Write the proportion equation
201,796.84 : 278,512.86 = 153,959.80 : x - Step 2: Convert to fraction form
201,796.84/278,512.86 = 153,959.80/x - Step 3: Cross multiply
201,796.84x = 278,512.86 × 153,959.80 - Step 4: Simplify right side
201,796.84x = 42,879,784,223.03 - Step 5: Solve for x
x = 42,879,784,223.03/201,796.84 - Step 6: Final answer
x = 212,489.87
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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.