Finding the Fourth Proportional to 290,327.68, 435,491.35 and 90,665.17
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Solution
The fourth proportional to 290,327.68, 435,491.35 and 90,665.17 is: 135,997.70
Step by Step Solution
- Step 1: Write the proportion equation
290,327.68 : 435,491.35 = 90,665.17 : x - Step 2: Convert to fraction form
290,327.68/435,491.35 = 90,665.17/x - Step 3: Cross multiply
290,327.68x = 435,491.35 × 90,665.17 - Step 4: Simplify right side
290,327.68x = 39,483,897,281.28 - Step 5: Solve for x
x = 39,483,897,281.28/290,327.68 - Step 6: Final answer
x = 135,997.70
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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.