Finding the Fourth Proportional to 210,845.90, 315,490.08 and 126,657.20
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Solution
The fourth proportional to 210,845.90, 315,490.08 and 126,657.20 is: 189,517.99
Step by Step Solution
- Step 1: Write the proportion equation
210,845.90 : 315,490.08 = 126,657.20 : x - Step 2: Convert to fraction form
210,845.90/315,490.08 = 126,657.20/x - Step 3: Cross multiply
210,845.90x = 315,490.08 × 126,657.20 - Step 4: Simplify right side
210,845.90x = 39,959,090,160.58 - Step 5: Solve for x
x = 39,959,090,160.58/210,845.90 - Step 6: Final answer
x = 189,517.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.