Finding the Fourth Proportional to 393,984,138.10, 590,976,207.15 and 248,865,315.70
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Solution
The fourth proportional to 393,984,138.10, 590,976,207.15 and 248,865,315.70 is: 373,297,973.55
Step by Step Solution
- Step 1: Write the proportion equation
393,984,138.10 : 590,976,207.15 = 248,865,315.70 : x - Step 2: Convert to fraction form
393,984,138.10/590,976,207.15 = 248,865,315.70/x - Step 3: Cross multiply
393,984,138.10x = 590,976,207.15 × 248,865,315.70 - Step 4: Simplify right side
393,984,138.10x = 147,073,480,363,573,344 - Step 5: Solve for x
x = 147,073,480,363,573,344/393,984,138.10 - Step 6: Final answer
x = 373,297,973.55
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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.