Finding the Fourth Proportional to 230,764.76, 318,455.66 and 128,790.21
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Solution
The fourth proportional to 230,764.76, 318,455.66 and 128,790.21 is: 177,730.66
Step by Step Solution
- Step 1: Write the proportion equation
230,764.76 : 318,455.66 = 128,790.21 : x - Step 2: Convert to fraction form
230,764.76/318,455.66 = 128,790.21/x - Step 3: Cross multiply
230,764.76x = 318,455.66 × 128,790.21 - Step 4: Simplify right side
230,764.76x = 41,013,972,843.27 - Step 5: Solve for x
x = 41,013,972,843.27/230,764.76 - Step 6: Final answer
x = 177,730.66
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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.