Finding the Fourth Proportional to 421,400.67, 581,533.11 and 230,415.63
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Solution
The fourth proportional to 421,400.67, 581,533.11 and 230,415.63 is: 317,973.67
Step by Step Solution
- Step 1: Write the proportion equation
421,400.67 : 581,533.11 = 230,415.63 : x - Step 2: Convert to fraction form
421,400.67/581,533.11 = 230,415.63/x - Step 3: Cross multiply
421,400.67x = 581,533.11 × 230,415.63 - Step 4: Simplify right side
421,400.67x = 133,994,317,906.51 - Step 5: Solve for x
x = 133,994,317,906.51/421,400.67 - Step 6: Final answer
x = 317,973.67
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1.5x scale
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.