Finding the Fourth Proportional to 397,357,271.01, 548,353,035.95 and 221,186,884.07
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Solution
The fourth proportional to 397,357,271.01, 548,353,035.95 and 221,186,884.07 is: 305,237,901.11
Step by Step Solution
- Step 1: Write the proportion equation
397,357,271.01 : 548,353,035.95 = 221,186,884.07 : x - Step 2: Convert to fraction form
397,357,271.01/548,353,035.95 = 221,186,884.07/x - Step 3: Cross multiply
397,357,271.01x = 548,353,035.95 × 221,186,884.07 - Step 4: Simplify right side
397,357,271.01x = 121,288,499,392,370,144 - Step 5: Solve for x
x = 121,288,499,392,370,144/397,357,271.01 - Step 6: Final answer
x = 305,237,901.11
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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.