Finding the Fourth Proportional to 278,543.50, 384,390.42 and 151,219.09
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Solution
The fourth proportional to 278,543.50, 384,390.42 and 151,219.09 is: 208,682.56
Step by Step Solution
- Step 1: Write the proportion equation
278,543.50 : 384,390.42 = 151,219.09 : x - Step 2: Convert to fraction form
278,543.50/384,390.42 = 151,219.09/x - Step 3: Cross multiply
278,543.50x = 384,390.42 × 151,219.09 - Step 4: Simplify right side
278,543.50x = 58,127,169,517.12 - Step 5: Solve for x
x = 58,127,169,517.12/278,543.50 - Step 6: Final answer
x = 208,682.56
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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.