Finding the Fourth Proportional to 230,823.14, 318,551.94 and 128,868.64
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Solution
The fourth proportional to 230,823.14, 318,551.94 and 128,868.64 is: 177,847.66
Step by Step Solution
- Step 1: Write the proportion equation
230,823.14 : 318,551.94 = 128,868.64 : x - Step 2: Convert to fraction form
230,823.14/318,551.94 = 128,868.64/x - Step 3: Cross multiply
230,823.14x = 318,551.94 × 128,868.64 - Step 4: Simplify right side
230,823.14x = 41,051,354,480.78 - Step 5: Solve for x
x = 41,051,354,480.78/230,823.14 - Step 6: Final answer
x = 177,847.66
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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.