Finding the Fourth Proportional to 443,835.49, 665,758.09 and 128,295.13
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Solution
The fourth proportional to 443,835.49, 665,758.09 and 128,295.13 is: 192,444.09
Step by Step Solution
- Step 1: Write the proportion equation
443,835.49 : 665,758.09 = 128,295.13 : x - Step 2: Convert to fraction form
443,835.49/665,758.09 = 128,295.13/x - Step 3: Cross multiply
443,835.49x = 665,758.09 × 128,295.13 - Step 4: Simplify right side
443,835.49x = 85,413,517,376.31 - Step 5: Solve for x
x = 85,413,517,376.31/443,835.49 - Step 6: Final answer
x = 192,444.09
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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.