Finding the Fourth Proportional to 236,415.21, 326,254.07 and 128,987.48
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Solution
The fourth proportional to 236,415.21, 326,254.07 and 128,987.48 is: 178,003.31
Step by Step Solution
- Step 1: Write the proportion equation
236,415.21 : 326,254.07 = 128,987.48 : x - Step 2: Convert to fraction form
236,415.21/326,254.07 = 128,987.48/x - Step 3: Cross multiply
236,415.21x = 326,254.07 × 128,987.48 - Step 4: Simplify right side
236,415.21x = 42,082,689,020.24 - Step 5: Solve for x
x = 42,082,689,020.24/236,415.21 - Step 6: Final answer
x = 178,003.31
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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.