Finding the Fourth Proportional to 289,703.64, 434,724.96 and 121,209.84
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Solution
The fourth proportional to 289,703.64, 434,724.96 and 121,209.84 is: 181,885.68
Step by Step Solution
- Step 1: Write the proportion equation
289,703.64 : 434,724.96 = 121,209.84 : x - Step 2: Convert to fraction form
289,703.64/434,724.96 = 121,209.84/x - Step 3: Cross multiply
289,703.64x = 434,724.96 × 121,209.84 - Step 4: Simplify right side
289,703.64x = 52,692,942,845.61 - Step 5: Solve for x
x = 52,692,942,845.61/289,703.64 - Step 6: Final answer
x = 181,885.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.