Finding the Fourth Proportional to 207,220.83, 285,689.47 and 135,477.51
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Solution
The fourth proportional to 207,220.83, 285,689.47 and 135,477.51 is: 186,778.99
Step by Step Solution
- Step 1: Write the proportion equation
207,220.83 : 285,689.47 = 135,477.51 : x - Step 2: Convert to fraction form
207,220.83/285,689.47 = 135,477.51/x - Step 3: Cross multiply
207,220.83x = 285,689.47 × 135,477.51 - Step 4: Simplify right side
207,220.83x = 38,704,498,028.82 - Step 5: Solve for x
x = 38,704,498,028.82/207,220.83 - Step 6: Final answer
x = 186,778.99
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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.