Finding the Fourth Proportional to 257,934,790.96, 355,940,660.84 and 157,631,036.42
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Solution
The fourth proportional to 257,934,790.96, 355,940,660.84 and 157,631,036.42 is: 217,525,115.80
Step by Step Solution
- Step 1: Write the proportion equation
257,934,790.96 : 355,940,660.84 = 157,631,036.42 : x - Step 2: Convert to fraction form
257,934,790.96/355,940,660.84 = 157,631,036.42/x - Step 3: Cross multiply
257,934,790.96x = 355,940,660.84 × 157,631,036.42 - Step 4: Simplify right side
257,934,790.96x = 56,107,295,272,330,608 - Step 5: Solve for x
x = 56,107,295,272,330,608/257,934,790.96 - Step 6: Final answer
x = 217,525,115.80
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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.