Finding the Fourth Proportional to 426,534.23, 640,195.01 and 216,319.79
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Solution
The fourth proportional to 426,534.23, 640,195.01 and 216,319.79 is: 324,679.33
Step by Step Solution
- Step 1: Write the proportion equation
426,534.23 : 640,195.01 = 216,319.79 : x - Step 2: Convert to fraction form
426,534.23/640,195.01 = 216,319.79/x - Step 3: Cross multiply
426,534.23x = 640,195.01 × 216,319.79 - Step 4: Simplify right side
426,534.23x = 138,486,850,122.25 - Step 5: Solve for x
x = 138,486,850,122.25/426,534.23 - Step 6: Final answer
x = 324,679.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.