Finding the Fourth Proportional to 210,220.09, 315,428.55 and 91,876.05
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Solution
The fourth proportional to 210,220.09, 315,428.55 and 91,876.05 is: 137,857.09
Step by Step Solution
- Step 1: Write the proportion equation
210,220.09 : 315,428.55 = 91,876.05 : x - Step 2: Convert to fraction form
210,220.09/315,428.55 = 91,876.05/x - Step 3: Cross multiply
210,220.09x = 315,428.55 × 91,876.05 - Step 4: Simplify right side
210,220.09x = 28,980,328,886.69 - Step 5: Solve for x
x = 28,980,328,886.69/210,220.09 - Step 6: Final answer
x = 137,857.09
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1.5x scale
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.