Finding the Fourth Proportional to 215,837.06, 297,877.30 and 129,823.70
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Solution
The fourth proportional to 215,837.06, 297,877.30 and 129,823.70 is: 179,170.03
Step by Step Solution
- Step 1: Write the proportion equation
215,837.06 : 297,877.30 = 129,823.70 : x - Step 2: Convert to fraction form
215,837.06/297,877.30 = 129,823.70/x - Step 3: Cross multiply
215,837.06x = 297,877.30 × 129,823.70 - Step 4: Simplify right side
215,837.06x = 38,671,531,418.06 - Step 5: Solve for x
x = 38,671,531,418.06/215,837.06 - Step 6: Final answer
x = 179,170.03
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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.