Finding the Fourth Proportional to 386,894.87, 533,036.67 and 299,379.08
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Solution
The fourth proportional to 386,894.87, 533,036.67 and 299,379.08 is: 412,463.54
Step by Step Solution
- Step 1: Write the proportion equation
386,894.87 : 533,036.67 = 299,379.08 : x - Step 2: Convert to fraction form
386,894.87/533,036.67 = 299,379.08/x - Step 3: Cross multiply
386,894.87x = 533,036.67 × 299,379.08 - Step 4: Simplify right side
386,894.87x = 159,580,027,870.86 - Step 5: Solve for x
x = 159,580,027,870.86/386,894.87 - Step 6: Final answer
x = 412,463.54
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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.