Finding the Fourth Proportional to 290,889.60, 436,332.80 and 80,526.08
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Solution
The fourth proportional to 290,889.60, 436,332.80 and 80,526.08 is: 120,788.68
Step by Step Solution
- Step 1: Write the proportion equation
290,889.60 : 436,332.80 = 80,526.08 : x - Step 2: Convert to fraction form
290,889.60/436,332.80 = 80,526.08/x - Step 3: Cross multiply
290,889.60x = 436,332.80 × 80,526.08 - Step 4: Simplify right side
290,889.60x = 35,136,169,959.42 - Step 5: Solve for x
x = 35,136,169,959.42/290,889.60 - Step 6: Final answer
x = 120,788.68
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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.