Finding the Fourth Proportional to 208,545.80, 312,818.70 and 129,813.80
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Solution
The fourth proportional to 208,545.80, 312,818.70 and 129,813.80 is: 194,720.70
Step by Step Solution
- Step 1: Write the proportion equation
208,545.80 : 312,818.70 = 129,813.80 : x - Step 2: Convert to fraction form
208,545.80/312,818.70 = 129,813.80/x - Step 3: Cross multiply
208,545.80x = 312,818.70 × 129,813.80 - Step 4: Simplify right side
208,545.80x = 40,608,184,158.06 - Step 5: Solve for x
x = 40,608,184,158.06/208,545.80 - Step 6: Final answer
x = 194,720.70
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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.