Finding the Fourth Proportional to 439,964,201.20, 659,946,301.80 and 198,099,497.20
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Solution
The fourth proportional to 439,964,201.20, 659,946,301.80 and 198,099,497.20 is: 297,149,245.80
Step by Step Solution
- Step 1: Write the proportion equation
439,964,201.20 : 659,946,301.80 = 198,099,497.20 : x - Step 2: Convert to fraction form
439,964,201.20/659,946,301.80 = 198,099,497.20/x - Step 3: Cross multiply
439,964,201.20x = 659,946,301.80 × 198,099,497.20 - Step 4: Simplify right side
439,964,201.20x = 130,735,030,565,579,440 - Step 5: Solve for x
x = 130,735,030,565,579,440/439,964,201.20 - Step 6: Final answer
x = 297,149,245.80
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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.