Finding the Fourth Proportional to 212,310,535.80, 318,465,803.70 and 68,703,367.80
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Solution
The fourth proportional to 212,310,535.80, 318,465,803.70 and 68,703,367.80 is: 103,055,051.70
Step by Step Solution
- Step 1: Write the proportion equation
212,310,535.80 : 318,465,803.70 = 68,703,367.80 : x - Step 2: Convert to fraction form
212,310,535.80/318,465,803.70 = 68,703,367.80/x - Step 3: Cross multiply
212,310,535.80x = 318,465,803.70 × 68,703,367.80 - Step 4: Simplify right side
212,310,535.80x = 21,879,673,243,323,700 - Step 5: Solve for x
x = 21,879,673,243,323,700/212,310,535.80 - Step 6: Final answer
x = 103,055,051.70
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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.