Finding the Fourth Proportional to 643,585.50, 888,147.99 and 357,151.68
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Solution
The fourth proportional to 643,585.50, 888,147.99 and 357,151.68 is: 492,869.32
Step by Step Solution
- Step 1: Write the proportion equation
643,585.50 : 888,147.99 = 357,151.68 : x - Step 2: Convert to fraction form
643,585.50/888,147.99 = 357,151.68/x - Step 3: Cross multiply
643,585.50x = 888,147.99 × 357,151.68 - Step 4: Simplify right side
643,585.50x = 317,203,546,717.12 - Step 5: Solve for x
x = 317,203,546,717.12/643,585.50 - Step 6: Final answer
x = 492,869.32
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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.