Finding the Fourth Proportional to 409,351.50, 614,049.12 and 128,890.62
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Solution
The fourth proportional to 409,351.50, 614,049.12 and 128,890.62 is: 193,342.82
Step by Step Solution
- Step 1: Write the proportion equation
409,351.50 : 614,049.12 = 128,890.62 : x - Step 2: Convert to fraction form
409,351.50/614,049.12 = 128,890.62/x - Step 3: Cross multiply
409,351.50x = 614,049.12 × 128,890.62 - Step 4: Simplify right side
409,351.50x = 79,145,171,787.25 - Step 5: Solve for x
x = 79,145,171,787.25/409,351.50 - Step 6: Final answer
x = 193,342.82
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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.