Finding the Fourth Proportional to 387,251.94, 534,457.80 and 217,486.07
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Solution
The fourth proportional to 387,251.94, 534,457.80 and 217,486.07 is: 300,158.92
Step by Step Solution
- Step 1: Write the proportion equation
387,251.94 : 534,457.80 = 217,486.07 : x - Step 2: Convert to fraction form
387,251.94/534,457.80 = 217,486.07/x - Step 3: Cross multiply
387,251.94x = 534,457.80 × 217,486.07 - Step 4: Simplify right side
387,251.94x = 116,237,122,743.13 - Step 5: Solve for x
x = 116,237,122,743.13/387,251.94 - Step 6: Final answer
x = 300,158.92
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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.