Finding the Fourth Proportional to 210,860.55, 290,992.70 and 120,225.09
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Solution
The fourth proportional to 210,860.55, 290,992.70 and 120,225.09 is: 165,913.56
Step by Step Solution
- Step 1: Write the proportion equation
210,860.55 : 290,992.70 = 120,225.09 : x - Step 2: Convert to fraction form
210,860.55/290,992.70 = 120,225.09/x - Step 3: Cross multiply
210,860.55x = 290,992.70 × 120,225.09 - Step 4: Simplify right side
210,860.55x = 34,984,624,938.63 - Step 5: Solve for x
x = 34,984,624,938.63/210,860.55 - Step 6: Final answer
x = 165,913.56
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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.