Finding the Fourth Proportional to 287,425,465.60, 431,138,198.40 and 82,960,211.20
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Solution
The fourth proportional to 287,425,465.60, 431,138,198.40 and 82,960,211.20 is: 124,440,316.80
Step by Step Solution
- Step 1: Write the proportion equation
287,425,465.60 : 431,138,198.40 = 82,960,211.20 : x - Step 2: Convert to fraction form
287,425,465.60/431,138,198.40 = 82,960,211.20/x - Step 3: Cross multiply
287,425,465.60x = 431,138,198.40 × 82,960,211.20 - Step 4: Simplify right side
287,425,465.60x = 35,767,315,995,651,500 - Step 5: Solve for x
x = 35,767,315,995,651,500/287,425,465.60 - Step 6: Final answer
x = 124,440,316.80
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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.