Finding the Fourth Proportional to 278,836.99, 384,797.40 and 151,512.60
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Solution
The fourth proportional to 278,836.99, 384,797.40 and 151,512.60 is: 209,088.67
Step by Step Solution
- Step 1: Write the proportion equation
278,836.99 : 384,797.40 = 151,512.60 : x - Step 2: Convert to fraction form
278,836.99/384,797.40 = 151,512.60/x - Step 3: Cross multiply
278,836.99x = 384,797.40 × 151,512.60 - Step 4: Simplify right side
278,836.99x = 58,301,654,547.24 - Step 5: Solve for x
x = 58,301,654,547.24/278,836.99 - Step 6: Final answer
x = 209,088.67
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1.5x scale
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.