Finding the Fourth Proportional to 289,409.34, 434,262.05 and 137,777.75
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Solution
The fourth proportional to 289,409.34, 434,262.05 and 137,777.75 is: 206,737.09
Step by Step Solution
- Step 1: Write the proportion equation
289,409.34 : 434,262.05 = 137,777.75 : x - Step 2: Convert to fraction form
289,409.34/434,262.05 = 137,777.75/x - Step 3: Cross multiply
289,409.34x = 434,262.05 × 137,777.75 - Step 4: Simplify right side
289,409.34x = 59,831,645,299.19 - Step 5: Solve for x
x = 59,831,645,299.19/289,409.34 - Step 6: Final answer
x = 206,737.09
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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.