Finding the Fourth Proportional to 312,565.74, 431,340.09 and 169,326.13
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Solution
The fourth proportional to 312,565.74, 431,340.09 and 169,326.13 is: 233,669.72
Step by Step Solution
- Step 1: Write the proportion equation
312,565.74 : 431,340.09 = 169,326.13 : x - Step 2: Convert to fraction form
312,565.74/431,340.09 = 169,326.13/x - Step 3: Cross multiply
312,565.74x = 431,340.09 × 169,326.13 - Step 4: Simplify right side
312,565.74x = 73,037,148,677.68 - Step 5: Solve for x
x = 73,037,148,677.68/312,565.74 - Step 6: Final answer
x = 233,669.72
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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.