Finding the Fourth Proportional to 280,751.08, 387,436.67 and 153,426.68
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Solution
The fourth proportional to 280,751.08, 387,436.67 and 153,426.68 is: 211,728.92
Step by Step Solution
- Step 1: Write the proportion equation
280,751.08 : 387,436.67 = 153,426.68 : x - Step 2: Convert to fraction form
280,751.08/387,436.67 = 153,426.68/x - Step 3: Cross multiply
280,751.08x = 387,436.67 × 153,426.68 - Step 4: Simplify right side
280,751.08x = 59,443,121,988.36 - Step 5: Solve for x
x = 59,443,121,988.36/280,751.08 - Step 6: Final answer
x = 211,728.92
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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.