Finding the Fourth Proportional to 315,128,441.28, 434,949,808.36 and 184,790,239.68
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Solution
The fourth proportional to 315,128,441.28, 434,949,808.36 and 184,790,239.68 is: 255,053,079.34
Step by Step Solution
- Step 1: Write the proportion equation
315,128,441.28 : 434,949,808.36 = 184,790,239.68 : x - Step 2: Convert to fraction form
315,128,441.28/434,949,808.36 = 184,790,239.68/x - Step 3: Cross multiply
315,128,441.28x = 434,949,808.36 × 184,790,239.68 - Step 4: Simplify right side
315,128,441.28x = 80,374,479,335,614,480 - Step 5: Solve for x
x = 80,374,479,335,614,480/315,128,441.28 - Step 6: Final answer
x = 255,053,079.34
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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.