Finding the Fourth Proportional to 328,803.80, 493,205.70 and 107,187.80
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Solution
The fourth proportional to 328,803.80, 493,205.70 and 107,187.80 is: 160,781.70
Step by Step Solution
- Step 1: Write the proportion equation
328,803.80 : 493,205.70 = 107,187.80 : x - Step 2: Convert to fraction form
328,803.80/493,205.70 = 107,187.80/x - Step 3: Cross multiply
328,803.80x = 493,205.70 × 107,187.80 - Step 4: Simplify right side
328,803.80x = 52,865,633,930.46 - Step 5: Solve for x
x = 52,865,633,930.46/328,803.80 - Step 6: Final answer
x = 160,781.70
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1.5x scale
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.