Finding the Fourth Proportional to 209,347.64, 314,655.84 and 138,511.88
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Solution
The fourth proportional to 209,347.64, 314,655.84 and 138,511.88 is: 208,187.55
Step by Step Solution
- Step 1: Write the proportion equation
209,347.64 : 314,655.84 = 138,511.88 : x - Step 2: Convert to fraction form
209,347.64/314,655.84 = 138,511.88/x - Step 3: Cross multiply
209,347.64x = 314,655.84 × 138,511.88 - Step 4: Simplify right side
209,347.64x = 43,583,571,951.38 - Step 5: Solve for x
x = 43,583,571,951.38/209,347.64 - Step 6: Final answer
x = 208,187.55
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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.