Finding the Fourth Proportional to 290,811.70, 408,069.50 and 290,811.70
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Solution
The fourth proportional to 290,811.70, 408,069.50 and 290,811.70 is: 408,069.50
Step by Step Solution
- Step 1: Write the proportion equation
290,811.70 : 408,069.50 = 290,811.70 : x - Step 2: Convert to fraction form
290,811.70/408,069.50 = 290,811.70/x - Step 3: Cross multiply
290,811.70x = 408,069.50 × 290,811.70 - Step 4: Simplify right side
290,811.70x = 118,671,385,013.15 - Step 5: Solve for x
x = 118,671,385,013.15/290,811.70 - Step 6: Final answer
x = 408,069.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.