Finding the Fourth Proportional to 316,648.64, 436,976.52 and 173,409.68
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Solution
The fourth proportional to 316,648.64, 436,976.52 and 173,409.68 is: 239,306.12
Step by Step Solution
- Step 1: Write the proportion equation
316,648.64 : 436,976.52 = 173,409.68 : x - Step 2: Convert to fraction form
316,648.64/436,976.52 = 173,409.68/x - Step 3: Cross multiply
316,648.64x = 436,976.52 × 173,409.68 - Step 4: Simplify right side
316,648.64x = 75,775,958,500.71 - Step 5: Solve for x
x = 75,775,958,500.71/316,648.64 - Step 6: Final answer
x = 239,306.12
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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.