Finding the Fourth Proportional to 286,709.06, 395,668.65 and 157,657.32
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Solution
The fourth proportional to 286,709.06, 395,668.65 and 157,657.32 is: 217,572.68
Step by Step Solution
- Step 1: Write the proportion equation
286,709.06 : 395,668.65 = 157,657.32 : x - Step 2: Convert to fraction form
286,709.06/395,668.65 = 157,657.32/x - Step 3: Cross multiply
286,709.06x = 395,668.65 × 157,657.32 - Step 4: Simplify right side
286,709.06x = 62,380,058,967.02 - Step 5: Solve for x
x = 62,380,058,967.02/286,709.06 - Step 6: Final answer
x = 217,572.68
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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.