Finding the Fourth Proportional to 213,764.04, 294,948.42 and 128,879.28
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Solution
The fourth proportional to 213,764.04, 294,948.42 and 128,879.28 is: 177,825.70
Step by Step Solution
- Step 1: Write the proportion equation
213,764.04 : 294,948.42 = 128,879.28 : x - Step 2: Convert to fraction form
213,764.04/294,948.42 = 128,879.28/x - Step 3: Cross multiply
213,764.04x = 294,948.42 × 128,879.28 - Step 4: Simplify right side
213,764.04x = 38,012,740,006.74 - Step 5: Solve for x
x = 38,012,740,006.74/213,764.04 - Step 6: Final answer
x = 177,825.70
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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.