Finding the Fourth Proportional to 212,720.13, 293,555.79 and 117,230.31
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Solution
The fourth proportional to 212,720.13, 293,555.79 and 117,230.31 is: 161,778.94
Step by Step Solution
- Step 1: Write the proportion equation
212,720.13 : 293,555.79 = 117,230.31 : x - Step 2: Convert to fraction form
212,720.13/293,555.79 = 117,230.31/x - Step 3: Cross multiply
212,720.13x = 293,555.79 × 117,230.31 - Step 4: Simplify right side
212,720.13x = 34,413,636,263.99 - Step 5: Solve for x
x = 34,413,636,263.99/212,720.13 - Step 6: Final answer
x = 161,778.94
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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.