Finding the Fourth Proportional to 354,925,265.39, 489,787,842.74 and 198,293,548.71
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Solution
The fourth proportional to 354,925,265.39, 489,787,842.74 and 198,293,548.71 is: 273,640,055.87
Step by Step Solution
- Step 1: Write the proportion equation
354,925,265.39 : 489,787,842.74 = 198,293,548.71 : x - Step 2: Convert to fraction form
354,925,265.39/489,787,842.74 = 198,293,548.71/x - Step 3: Cross multiply
354,925,265.39x = 489,787,842.74 × 198,293,548.71 - Step 4: Simplify right side
354,925,265.39x = 97,121,769,451,930,016 - Step 5: Solve for x
x = 97,121,769,451,930,016/354,925,265.39 - Step 6: Final answer
x = 273,640,055.87
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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.