Finding the Fourth Proportional to 261,063.18, 360,260.19 and 153,639.54
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Solution
The fourth proportional to 261,063.18, 360,260.19 and 153,639.54 is: 212,018.45
Step by Step Solution
- Step 1: Write the proportion equation
261,063.18 : 360,260.19 = 153,639.54 : x - Step 2: Convert to fraction form
261,063.18/360,260.19 = 153,639.54/x - Step 3: Cross multiply
261,063.18x = 360,260.19 × 153,639.54 - Step 4: Simplify right side
261,063.18x = 55,350,209,871.91 - Step 5: Solve for x
x = 55,350,209,871.91/261,063.18 - Step 6: Final answer
x = 212,018.45
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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.