Finding the Fourth Proportional to 281,046.10, 387,852.84 and 153,721.68
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Solution
The fourth proportional to 281,046.10, 387,852.84 and 153,721.68 is: 212,140.96
Step by Step Solution
- Step 1: Write the proportion equation
281,046.10 : 387,852.84 = 153,721.68 : x - Step 2: Convert to fraction form
281,046.10/387,852.84 = 153,721.68/x - Step 3: Cross multiply
281,046.10x = 387,852.84 × 153,721.68 - Step 4: Simplify right side
281,046.10x = 59,621,390,157.57 - Step 5: Solve for x
x = 59,621,390,157.57/281,046.10 - Step 6: Final answer
x = 212,140.96
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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.