Finding the Fourth Proportional to 317,463.79, 438,119.73 and 209,847.19
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Solution
The fourth proportional to 317,463.79, 438,119.73 and 209,847.19 is: 289,602.14
Step by Step Solution
- Step 1: Write the proportion equation
317,463.79 : 438,119.73 = 209,847.19 : x - Step 2: Convert to fraction form
317,463.79/438,119.73 = 209,847.19/x - Step 3: Cross multiply
317,463.79x = 438,119.73 × 209,847.19 - Step 4: Simplify right side
317,463.79x = 91,938,194,224.06 - Step 5: Solve for x
x = 91,938,194,224.06/317,463.79 - Step 6: Final answer
x = 289,602.14
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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.