Finding the Fourth Proportional to 351,955.31, 485,691.99 and 198,990.86
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Solution
The fourth proportional to 351,955.31, 485,691.99 and 198,990.86 is: 274,603.80
Step by Step Solution
- Step 1: Write the proportion equation
351,955.31 : 485,691.99 = 198,990.86 : x - Step 2: Convert to fraction form
351,955.31/485,691.99 = 198,990.86/x - Step 3: Cross multiply
351,955.31x = 485,691.99 × 198,990.86 - Step 4: Simplify right side
351,955.31x = 96,648,264,356.75 - Step 5: Solve for x
x = 96,648,264,356.75/351,955.31 - Step 6: Final answer
x = 274,603.80
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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.