Finding the Fourth Proportional to 438,470.87, 657,724.59 and 138,944.81
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Solution
The fourth proportional to 438,470.87, 657,724.59 and 138,944.81 is: 208,423.02
Step by Step Solution
- Step 1: Write the proportion equation
438,470.87 : 657,724.59 = 138,944.81 : x - Step 2: Convert to fraction form
438,470.87/657,724.59 = 138,944.81/x - Step 3: Cross multiply
438,470.87x = 657,724.59 × 138,944.81 - Step 4: Simplify right side
438,470.87x = 91,387,419,834.19 - Step 5: Solve for x
x = 91,387,419,834.19/438,470.87 - Step 6: Final answer
x = 208,423.02
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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.