Finding the Fourth Proportional to 286,432.35, 395,276.75 and 157,379.09
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Solution
The fourth proportional to 286,432.35, 395,276.75 and 157,379.09 is: 217,183.19
Step by Step Solution
- Step 1: Write the proportion equation
286,432.35 : 395,276.75 = 157,379.09 : x - Step 2: Convert to fraction form
286,432.35/395,276.75 = 157,379.09/x - Step 3: Cross multiply
286,432.35x = 395,276.75 × 157,379.09 - Step 4: Simplify right side
286,432.35x = 62,208,292,449.88 - Step 5: Solve for x
x = 62,208,292,449.88/286,432.35 - Step 6: Final answer
x = 217,183.19
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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.