Finding the Fourth Proportional to 312,322,584.64, 431,005,207.68 and 173,102,334.72
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Solution
The fourth proportional to 312,322,584.64, 431,005,207.68 and 173,102,334.72 is: 238,881,244.57
Step by Step Solution
- Step 1: Write the proportion equation
312,322,584.64 : 431,005,207.68 = 173,102,334.72 : x - Step 2: Convert to fraction form
312,322,584.64/431,005,207.68 = 173,102,334.72/x - Step 3: Cross multiply
312,322,584.64x = 431,005,207.68 × 173,102,334.72 - Step 4: Simplify right side
312,322,584.64x = 74,608,007,725,886,480 - Step 5: Solve for x
x = 74,608,007,725,886,480/312,322,584.64 - Step 6: Final answer
x = 238,881,244.57
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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.