Finding the Fourth Proportional to 236,641.68, 326,578.80 and 129,221.70
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Solution
The fourth proportional to 236,641.68, 326,578.80 and 129,221.70 is: 178,333.20
Step by Step Solution
- Step 1: Write the proportion equation
236,641.68 : 326,578.80 = 129,221.70 : x - Step 2: Convert to fraction form
236,641.68/326,578.80 = 129,221.70/x - Step 3: Cross multiply
236,641.68x = 326,578.80 × 129,221.70 - Step 4: Simplify right side
236,641.68x = 42,201,067,719.96 - Step 5: Solve for x
x = 42,201,067,719.96/236,641.68 - Step 6: Final answer
x = 178,333.20
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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.