Finding the Fourth Proportional to 420,162.91, 579,869.73 and 256,915.09
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Solution
The fourth proportional to 420,162.91, 579,869.73 and 256,915.09 is: 354,570.29
Step by Step Solution
- Step 1: Write the proportion equation
420,162.91 : 579,869.73 = 256,915.09 : x - Step 2: Convert to fraction form
420,162.91/579,869.73 = 256,915.09/x - Step 3: Cross multiply
420,162.91x = 579,869.73 × 256,915.09 - Step 4: Simplify right side
420,162.91x = 148,977,284,596.06 - Step 5: Solve for x
x = 148,977,284,596.06/420,162.91 - Step 6: Final answer
x = 354,570.29
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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.