Finding the Fourth Proportional to 209,511.30, 289,132.12 and 118,871.09
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Solution
The fourth proportional to 209,511.30, 289,132.12 and 118,871.09 is: 164,045.81
Step by Step Solution
- Step 1: Write the proportion equation
209,511.30 : 289,132.12 = 118,871.09 : x - Step 2: Convert to fraction form
209,511.30/289,132.12 = 118,871.09/x - Step 3: Cross multiply
209,511.30x = 289,132.12 × 118,871.09 - Step 4: Simplify right side
209,511.30x = 34,369,450,258.41 - Step 5: Solve for x
x = 34,369,450,258.41/209,511.30 - Step 6: Final answer
x = 164,045.81
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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.