Finding the Fourth Proportional to 395,306,020,453.05, 545,484,189,692.76 and 221,698,207,889.10
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Solution
The fourth proportional to 395,306,020,453.05, 545,484,189,692.76 and 221,698,207,889.10 is: 305,922,148,992.63
Step by Step Solution
- Step 1: Write the proportion equation
395,306,020,453.05 : 545,484,189,692.76 = 221,698,207,889.10 : x - Step 2: Convert to fraction form
395,306,020,453.05/545,484,189,692.76 = 221,698,207,889.10/x - Step 3: Cross multiply
395,306,020,453.05x = 545,484,189,692.76 × 221,698,207,889.10 - Step 4: Simplify right side
395,306,020,453.05x = 120,932,867,286,722,766,962,688 - Step 5: Solve for x
x = 120,932,867,286,722,766,962,688/395,306,020,453.05 - Step 6: Final answer
x = 305,922,148,992.63
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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.