Finding the Fourth Proportional to 278,636.24, 384,514.63 and 151,312.75
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Solution
The fourth proportional to 278,636.24, 384,514.63 and 151,312.75 is: 208,809.75
Step by Step Solution
- Step 1: Write the proportion equation
278,636.24 : 384,514.63 = 151,312.75 : x - Step 2: Convert to fraction form
278,636.24/384,514.63 = 151,312.75/x - Step 3: Cross multiply
278,636.24x = 384,514.63 × 151,312.75 - Step 4: Simplify right side
278,636.24x = 58,181,964,740.96 - Step 5: Solve for x
x = 58,181,964,740.96/278,636.24 - Step 6: Final answer
x = 208,809.75
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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.