Finding the Fourth Proportional to 281,134.14, 387,974.43 and 153,809.79
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Solution
The fourth proportional to 281,134.14, 387,974.43 and 153,809.79 is: 212,262.61
Step by Step Solution
- Step 1: Write the proportion equation
281,134.14 : 387,974.43 = 153,809.79 : x - Step 2: Convert to fraction form
281,134.14/387,974.43 = 153,809.79/x - Step 3: Cross multiply
281,134.14x = 387,974.43 × 153,809.79 - Step 4: Simplify right side
281,134.14x = 59,674,265,603.67 - Step 5: Solve for x
x = 59,674,265,603.67/281,134.14 - Step 6: Final answer
x = 212,262.61
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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.