Finding the Fourth Proportional to 397,163,484.87, 548,090,567.68 and 218,567,920.71
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Solution
The fourth proportional to 397,163,484.87, 548,090,567.68 and 218,567,920.71 is: 301,626,459.39
Step by Step Solution
- Step 1: Write the proportion equation
397,163,484.87 : 548,090,567.68 = 218,567,920.71 : x - Step 2: Convert to fraction form
397,163,484.87/548,090,567.68 = 218,567,920.71/x - Step 3: Cross multiply
397,163,484.87x = 548,090,567.68 × 218,567,920.71 - Step 4: Simplify right side
397,163,484.87x = 119,795,015,738,581,120 - Step 5: Solve for x
x = 119,795,015,738,581,120/397,163,484.87 - Step 6: Final answer
x = 301,626,459.39
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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.