Finding the Fourth Proportional to 209,928.76, 314,860.68 and 76,777.88
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Solution
The fourth proportional to 209,928.76, 314,860.68 and 76,777.88 is: 115,154.95
Step by Step Solution
- Step 1: Write the proportion equation
209,928.76 : 314,860.68 = 76,777.88 : x - Step 2: Convert to fraction form
209,928.76/314,860.68 = 76,777.88/x - Step 3: Cross multiply
209,928.76x = 314,860.68 × 76,777.88 - Step 4: Simplify right side
209,928.76x = 24,174,336,031.90 - Step 5: Solve for x
x = 24,174,336,031.90/209,928.76 - Step 6: Final answer
x = 115,154.95
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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.