Finding the Fourth Proportional to 280,326.42, 386,858.77 and 153,010.26
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Solution
The fourth proportional to 280,326.42, 386,858.77 and 153,010.26 is: 211,158.69
Step by Step Solution
- Step 1: Write the proportion equation
280,326.42 : 386,858.77 = 153,010.26 : x - Step 2: Convert to fraction form
280,326.42/386,858.77 = 153,010.26/x - Step 3: Cross multiply
280,326.42x = 386,858.77 × 153,010.26 - Step 4: Simplify right side
280,326.42x = 59,193,360,980.98 - Step 5: Solve for x
x = 59,193,360,980.98/280,326.42 - Step 6: Final answer
x = 211,158.69
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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.