Finding the Fourth Proportional to 276,574.09, 381,709.25 and 161,887.81
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Solution
The fourth proportional to 276,574.09, 381,709.25 and 161,887.81 is: 223,426.84
Step by Step Solution
- Step 1: Write the proportion equation
276,574.09 : 381,709.25 = 161,887.81 : x - Step 2: Convert to fraction form
276,574.09/381,709.25 = 161,887.81/x - Step 3: Cross multiply
276,574.09x = 381,709.25 × 161,887.81 - Step 4: Simplify right side
276,574.09x = 61,794,074,539.24 - Step 5: Solve for x
x = 61,794,074,539.24/276,574.09 - Step 6: Final answer
x = 223,426.84
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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.