Finding the Fourth Proportional to 207,917,638.49, 286,928,608.60 and 115,099,696.37
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Solution
The fourth proportional to 207,917,638.49, 286,928,608.60 and 115,099,696.37 is: 158,838,836.23
Step by Step Solution
- Step 1: Write the proportion equation
207,917,638.49 : 286,928,608.60 = 115,099,696.37 : x - Step 2: Convert to fraction form
207,917,638.49/286,928,608.60 = 115,099,696.37/x - Step 3: Cross multiply
207,917,638.49x = 286,928,608.60 × 115,099,696.37 - Step 4: Simplify right side
207,917,638.49x = 33,025,395,730,587,768 - Step 5: Solve for x
x = 33,025,395,730,587,768/207,917,638.49 - Step 6: Final answer
x = 158,838,836.23
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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.