Finding the Fourth Proportional to 289,740.96, 434,521.44 and 139,888.08
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Solution
The fourth proportional to 289,740.96, 434,521.44 and 139,888.08 is: 209,788.67
Step by Step Solution
- Step 1: Write the proportion equation
289,740.96 : 434,521.44 = 139,888.08 : x - Step 2: Convert to fraction form
289,740.96/434,521.44 = 139,888.08/x - Step 3: Cross multiply
289,740.96x = 434,521.44 × 139,888.08 - Step 4: Simplify right side
289,740.96x = 60,784,369,960.44 - Step 5: Solve for x
x = 60,784,369,960.44/289,740.96 - Step 6: Final answer
x = 209,788.67
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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.