Finding the Fourth Proportional to 212,310,531.80, 318,465,797.70 and 68,703,363.80
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Solution
The fourth proportional to 212,310,531.80, 318,465,797.70 and 68,703,363.80 is: 103,055,045.70
Step by Step Solution
- Step 1: Write the proportion equation
212,310,531.80 : 318,465,797.70 = 68,703,363.80 : x - Step 2: Convert to fraction form
212,310,531.80/318,465,797.70 = 68,703,363.80/x - Step 3: Cross multiply
212,310,531.80x = 318,465,797.70 × 68,703,363.80 - Step 4: Simplify right side
212,310,531.80x = 21,879,671,557,240,300 - Step 5: Solve for x
x = 21,879,671,557,240,300/212,310,531.80 - Step 6: Final answer
x = 103,055,045.70
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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.