Finding the Fourth Proportional to 385,604,493.44, 532,132,273.56 and 209,390,919.68
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Solution
The fourth proportional to 385,604,493.44, 532,132,273.56 and 209,390,919.68 is: 288,958,422.55
Step by Step Solution
- Step 1: Write the proportion equation
385,604,493.44 : 532,132,273.56 = 209,390,919.68 : x - Step 2: Convert to fraction form
385,604,493.44/532,132,273.56 = 209,390,919.68/x - Step 3: Cross multiply
385,604,493.44x = 532,132,273.56 × 209,390,919.68 - Step 4: Simplify right side
385,604,493.44x = 111,423,666,152,137,744 - Step 5: Solve for x
x = 111,423,666,152,137,744/385,604,493.44 - Step 6: Final answer
x = 288,958,422.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.