Finding the Fourth Proportional to 312,489.77, 431,227.80 and 176,537.75
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Solution
The fourth proportional to 312,489.77, 431,227.80 and 176,537.75 is: 243,617.53
Step by Step Solution
- Step 1: Write the proportion equation
312,489.77 : 431,227.80 = 176,537.75 : x - Step 2: Convert to fraction form
312,489.77/431,227.80 = 176,537.75/x - Step 3: Cross multiply
312,489.77x = 431,227.80 × 176,537.75 - Step 4: Simplify right side
312,489.77x = 76,127,983,393.31 - Step 5: Solve for x
x = 76,127,983,393.31/312,489.77 - Step 6: Final answer
x = 243,617.53
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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.