Finding the Fourth Proportional to 210,690.33, 290,752.65 and 115,197.02
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Solution
The fourth proportional to 210,690.33, 290,752.65 and 115,197.02 is: 158,971.89
Step by Step Solution
- Step 1: Write the proportion equation
210,690.33 : 290,752.65 = 115,197.02 : x - Step 2: Convert to fraction form
210,690.33/290,752.65 = 115,197.02/x - Step 3: Cross multiply
210,690.33x = 290,752.65 × 115,197.02 - Step 4: Simplify right side
210,690.33x = 33,493,840,541.13 - Step 5: Solve for x
x = 33,493,840,541.13/210,690.33 - Step 6: Final answer
x = 158,971.89
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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.