Finding the Fourth Proportional to 278,970.57, 384,979.08 and 151,647.09
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Solution
The fourth proportional to 278,970.57, 384,979.08 and 151,647.09 is: 209,272.82
Step by Step Solution
- Step 1: Write the proportion equation
278,970.57 : 384,979.08 = 151,647.09 : x - Step 2: Convert to fraction form
278,970.57/384,979.08 = 151,647.09/x - Step 3: Cross multiply
278,970.57x = 384,979.08 × 151,647.09 - Step 4: Simplify right side
278,970.57x = 58,380,957,192.88 - Step 5: Solve for x
x = 58,380,957,192.88/278,970.57 - Step 6: Final answer
x = 209,272.82
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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.