Finding the Fourth Proportional to 222,365.19, 306,864.17 and 120,390.74
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Solution
The fourth proportional to 222,365.19, 306,864.17 and 120,390.74 is: 166,139.33
Step by Step Solution
- Step 1: Write the proportion equation
222,365.19 : 306,864.17 = 120,390.74 : x - Step 2: Convert to fraction form
222,365.19/306,864.17 = 120,390.74/x - Step 3: Cross multiply
222,365.19x = 306,864.17 × 120,390.74 - Step 4: Simplify right side
222,365.19x = 36,943,604,505.79 - Step 5: Solve for x
x = 36,943,604,505.79/222,365.19 - Step 6: Final answer
x = 166,139.33
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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.