Finding the Fourth Proportional to 236,811.60, 355,201.20 and 76,885.20
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Solution
The fourth proportional to 236,811.60, 355,201.20 and 76,885.20 is: 115,322.54
Step by Step Solution
- Step 1: Write the proportion equation
236,811.60 : 355,201.20 = 76,885.20 : x - Step 2: Convert to fraction form
236,811.60/355,201.20 = 76,885.20/x - Step 3: Cross multiply
236,811.60x = 355,201.20 × 76,885.20 - Step 4: Simplify right side
236,811.60x = 27,309,715,302.24 - Step 5: Solve for x
x = 27,309,715,302.24/236,811.60 - Step 6: Final answer
x = 115,322.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.