Finding the Fourth Proportional to 212,913.20, 319,369.80 and 202,545.20
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Solution
The fourth proportional to 212,913.20, 319,369.80 and 202,545.20 is: 303,817.80
Step by Step Solution
- Step 1: Write the proportion equation
212,913.20 : 319,369.80 = 202,545.20 : x - Step 2: Convert to fraction form
212,913.20/319,369.80 = 202,545.20/x - Step 3: Cross multiply
212,913.20x = 319,369.80 × 202,545.20 - Step 4: Simplify right side
212,913.20x = 64,686,820,014.96 - Step 5: Solve for x
x = 64,686,820,014.96/212,913.20 - Step 6: Final answer
x = 303,817.80
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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.