Finding the Fourth Proportional to 257,721.99, 386,427.66 and 115,541.55
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Solution
The fourth proportional to 257,721.99, 386,427.66 and 115,541.55 is: 173,242.69
Step by Step Solution
- Step 1: Write the proportion equation
257,721.99 : 386,427.66 = 115,541.55 : x - Step 2: Convert to fraction form
257,721.99/386,427.66 = 115,541.55/x - Step 3: Cross multiply
257,721.99x = 386,427.66 × 115,541.55 - Step 4: Simplify right side
257,721.99x = 44,648,451,015.91 - Step 5: Solve for x
x = 44,648,451,015.91/257,721.99 - Step 6: Final answer
x = 173,242.69
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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.