Finding the Fourth Proportional to 257,415.36, 355,113.12 and 161,974.68
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Solution
The fourth proportional to 257,415.36, 355,113.12 and 161,974.68 is: 223,449.50
Step by Step Solution
- Step 1: Write the proportion equation
257,415.36 : 355,113.12 = 161,974.68 : x - Step 2: Convert to fraction form
257,415.36/355,113.12 = 161,974.68/x - Step 3: Cross multiply
257,415.36x = 355,113.12 × 161,974.68 - Step 4: Simplify right side
257,415.36x = 57,519,333,975.80 - Step 5: Solve for x
x = 57,519,333,975.80/257,415.36 - Step 6: Final answer
x = 223,449.50
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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.