Finding the Fourth Proportional to 215,285.81, 297,062.81 and 129,226.55
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Solution
The fourth proportional to 215,285.81, 297,062.81 and 129,226.55 is: 178,313.66
Step by Step Solution
- Step 1: Write the proportion equation
215,285.81 : 297,062.81 = 129,226.55 : x - Step 2: Convert to fraction form
215,285.81/297,062.81 = 129,226.55/x - Step 3: Cross multiply
215,285.81x = 297,062.81 × 129,226.55 - Step 4: Simplify right side
215,285.81x = 38,388,400,422.76 - Step 5: Solve for x
x = 38,388,400,422.76/215,285.81 - Step 6: Final answer
x = 178,313.66
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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.