Finding the Fourth Proportional to 257,643.10, 386,277.80 and 173,193.78
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Solution
The fourth proportional to 257,643.10, 386,277.80 and 173,193.78 is: 259,665.07
Step by Step Solution
- Step 1: Write the proportion equation
257,643.10 : 386,277.80 = 173,193.78 : x - Step 2: Convert to fraction form
257,643.10/386,277.80 = 173,193.78/x - Step 3: Cross multiply
257,643.10x = 386,277.80 × 173,193.78 - Step 4: Simplify right side
257,643.10x = 66,900,912,312.08 - Step 5: Solve for x
x = 66,900,912,312.08/257,643.10 - Step 6: Final answer
x = 259,665.07
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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.