Finding the Fourth Proportional to 257,698.16, 386,658.52 and 139,452.96
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Solution
The fourth proportional to 257,698.16, 386,658.52 and 139,452.96 is: 209,239.66
Step by Step Solution
- Step 1: Write the proportion equation
257,698.16 : 386,658.52 = 139,452.96 : x - Step 2: Convert to fraction form
257,698.16/386,658.52 = 139,452.96/x - Step 3: Cross multiply
257,698.16x = 386,658.52 × 139,452.96 - Step 4: Simplify right side
257,698.16x = 53,920,675,123.22 - Step 5: Solve for x
x = 53,920,675,123.22/257,698.16 - Step 6: Final answer
x = 209,239.66
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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.