Finding the Fourth Proportional to 489,193.80, 733,790.70 and 209,257.80
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Solution
The fourth proportional to 489,193.80, 733,790.70 and 209,257.80 is: 313,886.70
Step by Step Solution
- Step 1: Write the proportion equation
489,193.80 : 733,790.70 = 209,257.80 : x - Step 2: Convert to fraction form
489,193.80/733,790.70 = 209,257.80/x - Step 3: Cross multiply
489,193.80x = 733,790.70 × 209,257.80 - Step 4: Simplify right side
489,193.80x = 153,551,427,542.46 - Step 5: Solve for x
x = 153,551,427,542.46/489,193.80 - Step 6: Final answer
x = 313,886.70
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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.