Finding the Fourth Proportional to 281,055.99, 387,863.42 and 153,731.59
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Solution
The fourth proportional to 281,055.99, 387,863.42 and 153,731.59 is: 212,152.95
Step by Step Solution
- Step 1: Write the proportion equation
281,055.99 : 387,863.42 = 153,731.59 : x - Step 2: Convert to fraction form
281,055.99/387,863.42 = 153,731.59/x - Step 3: Cross multiply
281,055.99x = 387,863.42 × 153,731.59 - Step 4: Simplify right side
281,055.99x = 59,626,858,521.12 - Step 5: Solve for x
x = 59,626,858,521.12/281,055.99 - Step 6: Final answer
x = 212,152.95
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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.