Finding the Fourth Proportional to 289,904.18, 434,857.08 and 90,231.08
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Solution
The fourth proportional to 289,904.18, 434,857.08 and 90,231.08 is: 135,346.87
Step by Step Solution
- Step 1: Write the proportion equation
289,904.18 : 434,857.08 = 90,231.08 : x - Step 2: Convert to fraction form
289,904.18/434,857.08 = 90,231.08/x - Step 3: Cross multiply
289,904.18x = 434,857.08 × 90,231.08 - Step 4: Simplify right side
289,904.18x = 39,237,623,974.05 - Step 5: Solve for x
x = 39,237,623,974.05/289,904.18 - Step 6: Final answer
x = 135,346.87
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1.5x scale
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.