Finding the Fourth Proportional to 288,451,260.65, 398,199,988.49 and 193,245,702.12
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Solution
The fourth proportional to 288,451,260.65, 398,199,988.49 and 193,245,702.12 is: 266,771,017.70
Step by Step Solution
- Step 1: Write the proportion equation
288,451,260.65 : 398,199,988.49 = 193,245,702.12 : x - Step 2: Convert to fraction form
288,451,260.65/398,199,988.49 = 193,245,702.12/x - Step 3: Cross multiply
288,451,260.65x = 398,199,988.49 × 193,245,702.12 - Step 4: Simplify right side
288,451,260.65x = 76,950,436,358,959,744 - Step 5: Solve for x
x = 76,950,436,358,959,744/288,451,260.65 - Step 6: Final answer
x = 266,771,017.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.