Finding the Fourth Proportional to 210,326.79, 290,167.95 and 129,613.74
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Solution
The fourth proportional to 210,326.79, 290,167.95 and 129,613.74 is: 178,815.80
Step by Step Solution
- Step 1: Write the proportion equation
210,326.79 : 290,167.95 = 129,613.74 : x - Step 2: Convert to fraction form
210,326.79/290,167.95 = 129,613.74/x - Step 3: Cross multiply
210,326.79x = 290,167.95 × 129,613.74 - Step 4: Simplify right side
210,326.79x = 37,609,753,227.63 - Step 5: Solve for x
x = 37,609,753,227.63/210,326.79 - Step 6: Final answer
x = 178,815.80
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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.