Finding the Fourth Proportional to 252,243,201.60, 378,364,802.40 and 211,428,532.80
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Solution
The fourth proportional to 252,243,201.60, 378,364,802.40 and 211,428,532.80 is: 317,142,799.20
Step by Step Solution
- Step 1: Write the proportion equation
252,243,201.60 : 378,364,802.40 = 211,428,532.80 : x - Step 2: Convert to fraction form
252,243,201.60/378,364,802.40 = 211,428,532.80/x - Step 3: Cross multiply
252,243,201.60x = 378,364,802.40 × 211,428,532.80 - Step 4: Simplify right side
252,243,201.60x = 79,997,115,034,593,920 - Step 5: Solve for x
x = 79,997,115,034,593,920/252,243,201.60 - Step 6: Final answer
x = 317,142,799.20
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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.