Finding the Fourth Proportional to 465,198.74, 642,218.09 and 313,037.00
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Solution
The fourth proportional to 465,198.74, 642,218.09 and 313,037.00 is: 432,155.14
Step by Step Solution
- Step 1: Write the proportion equation
465,198.74 : 642,218.09 = 313,037.00 : x - Step 2: Convert to fraction form
465,198.74/642,218.09 = 313,037.00/x - Step 3: Cross multiply
465,198.74x = 642,218.09 × 313,037.00 - Step 4: Simplify right side
465,198.74x = 201,038,028,125.10 - Step 5: Solve for x
x = 201,038,028,125.10/465,198.74 - Step 6: Final answer
x = 432,155.14
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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.