Finding the Fourth Proportional to 395,137,595.75, 545,289,882.14 and 221,297,339.75
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Solution
The fourth proportional to 395,137,595.75, 545,289,882.14 and 221,297,339.75 is: 305,390,328.86
Step by Step Solution
- Step 1: Write the proportion equation
395,137,595.75 : 545,289,882.14 = 221,297,339.75 : x - Step 2: Convert to fraction form
395,137,595.75/545,289,882.14 = 221,297,339.75/x - Step 3: Cross multiply
395,137,595.75x = 545,289,882.14 × 221,297,339.75 - Step 4: Simplify right side
395,137,595.75x = 120,671,200,309,066,544 - Step 5: Solve for x
x = 120,671,200,309,066,544/395,137,595.75 - Step 6: Final answer
x = 305,390,328.86
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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.