Finding the Fourth Proportional to 354,520,716.48, 489,320,218.08 and 207,890,239.68
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Solution
The fourth proportional to 354,520,716.48, 489,320,218.08 and 207,890,239.68 is: 286,936,398.04
Step by Step Solution
- Step 1: Write the proportion equation
354,520,716.48 : 489,320,218.08 = 207,890,239.68 : x - Step 2: Convert to fraction form
354,520,716.48/489,320,218.08 = 207,890,239.68/x - Step 3: Cross multiply
354,520,716.48x = 489,320,218.08 × 207,890,239.68 - Step 4: Simplify right side
354,520,716.48x = 101,724,897,416,921,072 - Step 5: Solve for x
x = 101,724,897,416,921,072/354,520,716.48 - Step 6: Final answer
x = 286,936,398.04
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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.