Finding the Fourth Proportional to 395,387,945.28, 545,639,802.93 and 225,864,633.96
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Solution
The fourth proportional to 395,387,945.28, 545,639,802.93 and 225,864,633.96 is: 311,695,730.32
Step by Step Solution
- Step 1: Write the proportion equation
395,387,945.28 : 545,639,802.93 = 225,864,633.96 : x - Step 2: Convert to fraction form
395,387,945.28/545,639,802.93 = 225,864,633.96/x - Step 3: Cross multiply
395,387,945.28x = 545,639,802.93 × 225,864,633.96 - Step 4: Simplify right side
395,387,945.28x = 123,240,734,362,790,976 - Step 5: Solve for x
x = 123,240,734,362,790,976/395,387,945.28 - Step 6: Final answer
x = 311,695,730.32
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.