Finding the Fourth Proportional to 280,749.58, 387,434.60 and 153,425.18
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Solution
The fourth proportional to 280,749.58, 387,434.60 and 153,425.18 is: 211,726.85
Step by Step Solution
- Step 1: Write the proportion equation
280,749.58 : 387,434.60 = 153,425.18 : x - Step 2: Convert to fraction form
280,749.58/387,434.60 = 153,425.18/x - Step 3: Cross multiply
280,749.58x = 387,434.60 × 153,425.18 - Step 4: Simplify right side
280,749.58x = 59,442,222,476.10 - Step 5: Solve for x
x = 59,442,222,476.10/280,749.58 - Step 6: Final answer
x = 211,726.85
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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.