Finding the Fourth Proportional to 398,577.21, 598,150.13 and 221,226.09
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Solution
The fourth proportional to 398,577.21, 598,150.13 and 221,226.09 is: 331,996.94
Step by Step Solution
- Step 1: Write the proportion equation
398,577.21 : 598,150.13 = 221,226.09 : x - Step 2: Convert to fraction form
398,577.21/598,150.13 = 221,226.09/x - Step 3: Cross multiply
398,577.21x = 598,150.13 × 221,226.09 - Step 4: Simplify right side
398,577.21x = 132,326,413,386.76 - Step 5: Solve for x
x = 132,326,413,386.76/398,577.21 - Step 6: Final answer
x = 331,996.94
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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.