Finding the Fourth Proportional to 257,809,608.36, 355,781,794.50 and 140,338,315.08
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Solution
The fourth proportional to 257,809,608.36, 355,781,794.50 and 140,338,315.08 is: 193,669,343.41
Step by Step Solution
- Step 1: Write the proportion equation
257,809,608.36 : 355,781,794.50 = 140,338,315.08 : x - Step 2: Convert to fraction form
257,809,608.36/355,781,794.50 = 140,338,315.08/x - Step 3: Cross multiply
257,809,608.36x = 355,781,794.50 × 140,338,315.08 - Step 4: Simplify right side
257,809,608.36x = 49,929,817,576,268,816 - Step 5: Solve for x
x = 49,929,817,576,268,816/257,809,608.36 - Step 6: Final answer
x = 193,669,343.41
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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.