Finding the Fourth Proportional to 355,007,114.87, 489,900,420.86 and 198,375,508.94
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Solution
The fourth proportional to 355,007,114.87, 489,900,420.86 and 198,375,508.94 is: 273,752,950.99
Step by Step Solution
- Step 1: Write the proportion equation
355,007,114.87 : 489,900,420.86 = 198,375,508.94 : x - Step 2: Convert to fraction form
355,007,114.87/489,900,420.86 = 198,375,508.94/x - Step 3: Cross multiply
355,007,114.87x = 489,900,420.86 × 198,375,508.94 - Step 4: Simplify right side
355,007,114.87x = 97,184,245,315,573,200 - Step 5: Solve for x
x = 97,184,245,315,573,200/355,007,114.87 - Step 6: Final answer
x = 273,752,950.99
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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.