Finding the Fourth Proportional to 281,306.84, 388,203.84 and 153,990.48
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Solution
The fourth proportional to 281,306.84, 388,203.84 and 153,990.48 is: 212,507.08
Step by Step Solution
- Step 1: Write the proportion equation
281,306.84 : 388,203.84 = 153,990.48 : x - Step 2: Convert to fraction form
281,306.84/388,203.84 = 153,990.48/x - Step 3: Cross multiply
281,306.84x = 388,203.84 × 153,990.48 - Step 4: Simplify right side
281,306.84x = 59,779,695,659.44 - Step 5: Solve for x
x = 59,779,695,659.44/281,306.84 - Step 6: Final answer
x = 212,507.08
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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.