Finding the Fourth Proportional to 438,581.76, 605,177.68 and 257,225.28
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Solution
The fourth proportional to 438,581.76, 605,177.68 and 257,225.28 is: 354,932.68
Step by Step Solution
- Step 1: Write the proportion equation
438,581.76 : 605,177.68 = 257,225.28 : x - Step 2: Convert to fraction form
438,581.76/605,177.68 = 257,225.28/x - Step 3: Cross multiply
438,581.76x = 605,177.68 × 257,225.28 - Step 4: Simplify right side
438,581.76x = 155,666,998,187.75 - Step 5: Solve for x
x = 155,666,998,187.75/438,581.76 - Step 6: Final answer
x = 354,932.68
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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.