Finding the Fourth Proportional to 213,317.28, 294,284.88 and 128,386.08
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Solution
The fourth proportional to 213,317.28, 294,284.88 and 128,386.08 is: 177,116.84
Step by Step Solution
- Step 1: Write the proportion equation
213,317.28 : 294,284.88 = 128,386.08 : x - Step 2: Convert to fraction form
213,317.28/294,284.88 = 128,386.08/x - Step 3: Cross multiply
213,317.28x = 294,284.88 × 128,386.08 - Step 4: Simplify right side
213,317.28x = 37,782,082,146.47 - Step 5: Solve for x
x = 37,782,082,146.47/213,317.28 - Step 6: Final answer
x = 177,116.84
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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.