Finding the Fourth Proportional to 290,553.80, 435,830.70 and 103,497.80
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Solution
The fourth proportional to 290,553.80, 435,830.70 and 103,497.80 is: 155,246.70
Step by Step Solution
- Step 1: Write the proportion equation
290,553.80 : 435,830.70 = 103,497.80 : x - Step 2: Convert to fraction form
290,553.80/435,830.70 = 103,497.80/x - Step 3: Cross multiply
290,553.80x = 435,830.70 × 103,497.80 - Step 4: Simplify right side
290,553.80x = 45,107,518,622.46 - Step 5: Solve for x
x = 45,107,518,622.46/290,553.80 - Step 6: Final answer
x = 155,246.70
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1.5x scale
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.