Finding the Fourth Proportional to 419,117.09, 628,669.49 and 103,573.98
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Solution
The fourth proportional to 419,117.09, 628,669.49 and 103,573.98 is: 155,359.45
Step by Step Solution
- Step 1: Write the proportion equation
419,117.09 : 628,669.49 = 103,573.98 : x - Step 2: Convert to fraction form
419,117.09/628,669.49 = 103,573.98/x - Step 3: Cross multiply
419,117.09x = 628,669.49 × 103,573.98 - Step 4: Simplify right side
419,117.09x = 65,113,800,666.00 - Step 5: Solve for x
x = 65,113,800,666.00/419,117.09 - Step 6: Final answer
x = 155,359.45
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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.