Finding the Fourth Proportional to 261,801.21, 392,899.59 and 209,838.09
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Solution
The fourth proportional to 261,801.21, 392,899.59 and 209,838.09 is: 314,915.66
Step by Step Solution
- Step 1: Write the proportion equation
261,801.21 : 392,899.59 = 209,838.09 : x - Step 2: Convert to fraction form
261,801.21/392,899.59 = 209,838.09/x - Step 3: Cross multiply
261,801.21x = 392,899.59 × 209,838.09 - Step 4: Simplify right side
261,801.21x = 82,445,299,527.38 - Step 5: Solve for x
x = 82,445,299,527.38/261,801.21 - Step 6: Final answer
x = 314,915.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.