Finding the Fourth Proportional to 280,724.00, 387,408.68 and 153,407.80
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Solution
The fourth proportional to 280,724.00, 387,408.68 and 153,407.80 is: 211,707.98
Step by Step Solution
- Step 1: Write the proportion equation
280,724.00 : 387,408.68 = 153,407.80 : x - Step 2: Convert to fraction form
280,724.00/387,408.68 = 153,407.80/x - Step 3: Cross multiply
280,724.00x = 387,408.68 × 153,407.80 - Step 4: Simplify right side
280,724.00x = 59,431,512,714.70 - Step 5: Solve for x
x = 59,431,512,714.70/280,724.00 - Step 6: Final answer
x = 211,707.98
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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.