Finding the Fourth Proportional to 257,236.14, 354,787.73 and 155,155.17
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Solution
The fourth proportional to 257,236.14, 354,787.73 and 155,155.17 is: 213,994.62
Step by Step Solution
- Step 1: Write the proportion equation
257,236.14 : 354,787.73 = 155,155.17 : x - Step 2: Convert to fraction form
257,236.14/354,787.73 = 155,155.17/x - Step 3: Cross multiply
257,236.14x = 354,787.73 × 155,155.17 - Step 4: Simplify right side
257,236.14x = 55,047,150,562.06 - Step 5: Solve for x
x = 55,047,150,562.06/257,236.14 - Step 6: Final answer
x = 213,994.62
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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.