Finding the Fourth Proportional to 639,427.16, 958,499.22 and 218,415.08
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Solution
The fourth proportional to 639,427.16, 958,499.22 and 218,415.08 is: 327,403.49
Step by Step Solution
- Step 1: Write the proportion equation
639,427.16 : 958,499.22 = 218,415.08 : x - Step 2: Convert to fraction form
639,427.16/958,499.22 = 218,415.08/x - Step 3: Cross multiply
639,427.16x = 958,499.22 × 218,415.08 - Step 4: Simplify right side
639,427.16x = 209,350,683,816.24 - Step 5: Solve for x
x = 209,350,683,816.24/639,427.16 - Step 6: Final answer
x = 327,403.49
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1.5x scale
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.