Finding the Fourth Proportional to 207,917,638.68, 286,928,608.86 and 115,099,696.56
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Solution
The fourth proportional to 207,917,638.68, 286,928,608.86 and 115,099,696.56 is: 158,838,836.49
Step by Step Solution
- Step 1: Write the proportion equation
207,917,638.68 : 286,928,608.86 = 115,099,696.56 : x - Step 2: Convert to fraction form
207,917,638.68/286,928,608.86 = 115,099,696.56/x - Step 3: Cross multiply
207,917,638.68x = 286,928,608.86 × 115,099,696.56 - Step 4: Simplify right side
207,917,638.68x = 33,025,395,814,168,928 - Step 5: Solve for x
x = 33,025,395,814,168,928/207,917,638.68 - Step 6: Final answer
x = 158,838,836.49
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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.