Finding the Fourth Proportional to 397,163,485.87, 548,090,569.06 and 218,567,921.71
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Solution
The fourth proportional to 397,163,485.87, 548,090,569.06 and 218,567,921.71 is: 301,626,460.77
Step by Step Solution
- Step 1: Write the proportion equation
397,163,485.87 : 548,090,569.06 = 218,567,921.71 : x - Step 2: Convert to fraction form
397,163,485.87/548,090,569.06 = 218,567,921.71/x - Step 3: Cross multiply
397,163,485.87x = 548,090,569.06 × 218,567,921.71 - Step 4: Simplify right side
397,163,485.87x = 119,795,016,588,295,424 - Step 5: Solve for x
x = 119,795,016,588,295,424/397,163,485.87 - Step 6: Final answer
x = 301,626,460.77
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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.