Finding the Fourth Proportional to 278,615.70, 384,489.99 and 151,290.99
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Solution
The fourth proportional to 278,615.70, 384,489.99 and 151,290.99 is: 208,781.74
Step by Step Solution
- Step 1: Write the proportion equation
278,615.70 : 384,489.99 = 151,290.99 : x - Step 2: Convert to fraction form
278,615.70/384,489.99 = 151,290.99/x - Step 3: Cross multiply
278,615.70x = 384,489.99 × 151,290.99 - Step 4: Simplify right side
278,615.70x = 58,169,871,232.19 - Step 5: Solve for x
x = 58,169,871,232.19/278,615.70 - Step 6: Final answer
x = 208,781.74
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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.