Finding the Fourth Proportional to 287,609,805.30, 431,414,707.95 and 199,603,175.70
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Solution
The fourth proportional to 287,609,805.30, 431,414,707.95 and 199,603,175.70 is: 299,404,763.55
Step by Step Solution
- Step 1: Write the proportion equation
287,609,805.30 : 431,414,707.95 = 199,603,175.70 : x - Step 2: Convert to fraction form
287,609,805.30/431,414,707.95 = 199,603,175.70/x - Step 3: Cross multiply
287,609,805.30x = 431,414,707.95 × 199,603,175.70 - Step 4: Simplify right side
287,609,805.30x = 86,111,745,750,508,032 - Step 5: Solve for x
x = 86,111,745,750,508,032/287,609,805.30 - Step 6: Final answer
x = 299,404,763.55
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1.5x scale
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.