Finding the Fourth Proportional to 230,778.14, 318,489.84 and 128,823.64
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Solution
The fourth proportional to 230,778.14, 318,489.84 and 128,823.64 is: 177,785.56
Step by Step Solution
- Step 1: Write the proportion equation
230,778.14 : 318,489.84 = 128,823.64 : x - Step 2: Convert to fraction form
230,778.14/318,489.84 = 128,823.64/x - Step 3: Cross multiply
230,778.14x = 318,489.84 × 128,823.64 - Step 4: Simplify right side
230,778.14x = 41,029,019,695.59 - Step 5: Solve for x
x = 41,029,019,695.59/230,778.14 - Step 6: Final answer
x = 177,785.56
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1.5x scale
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.