Finding the Fourth Proportional to 397,472,138.48, 548,485,125.17 and 221,255,603.07
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Solution
The fourth proportional to 397,472,138.48, 548,485,125.17 and 221,255,603.07 is: 305,318,022.06
Step by Step Solution
- Step 1: Write the proportion equation
397,472,138.48 : 548,485,125.17 = 221,255,603.07 : x - Step 2: Convert to fraction form
397,472,138.48/548,485,125.17 = 221,255,603.07/x - Step 3: Cross multiply
397,472,138.48x = 548,485,125.17 × 221,255,603.07 - Step 4: Simplify right side
397,472,138.48x = 121,355,407,143,306,496 - Step 5: Solve for x
x = 121,355,407,143,306,496/397,472,138.48 - Step 6: Final answer
x = 305,318,022.06
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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.